{"id":6184,"date":"2026-11-05T20:00:00","date_gmt":"2026-11-06T01:00:00","guid":{"rendered":"https:\/\/www.semiconductorcutting.com\/?p=6184"},"modified":"2026-11-05T23:37:20","modified_gmt":"2026-11-06T04:37:20","slug":"piezoelectric-crystals","status":"publish","type":"post","link":"https:\/\/www.semiconductorcutting.com\/ja\/piezoelectric-crystals\/","title":{"rendered":"\u5727\u96fb\u7d50\u6676\u306e\u8aac\u660e\uff1a\u77f3\u82f1\u3001LN\u3001LT\u3001\u304a\u3088\u3073\u30e9\u30f3\u30b0\u77f3\u82f1"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"6184\" class=\"elementor elementor-6184 elementor-bc-flex-widget\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-h02layout e-con-full e-flex e-con e-parent\" data-id=\"h02layout\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-h02html elementor-widget elementor-widget-html\" 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#d2ddd5;padding:13px;text-align:left;vertical-align:top}.article-preview th{background:#e8f0e9;color:#153d36}.article-preview .reading-body h3{color:#153d36;font:700 19px\/1.4 Arial,sans-serif;margin:24px 0 12px}.article-preview .reading-sidebar{max-height:calc(100vh - 48px);overflow-y:auto}@media(max-width:767px){.article-preview .reading-sidebar{max-height:none;overflow:visible}.article-preview th,.article-preview td{min-width:130px}}<\/style><style>.article-preview .table-scroll{overflow-x:auto;margin:24px 0}.article-preview table{width:100%;border-collapse:collapse}.article-preview th,.article-preview td{padding:10px;border:1px solid #dbe7df;text-align:left;vertical-align:top}.article-preview th{background:#edf3ed}<\/style><main class=\"article-preview\"><header class=\"article-hero\"><div class=\"hero-inner\"><div class=\"hero-copy\"><h1>\u5727\u96fb\u7d50\u6676\u306e\u8aac\u660e\uff1a\u77f3\u82f1\u3001LN\u3001LT\u3001\u304a\u3088\u3073\u30e9\u30f3\u30b0\u77f3\u82f1<\/h1><p>\u5727\u96fb\u7d50\u6676\u306f\u3001\u30b9\u30e9\u30a4\u30b9\u524d\u306b\u6750\u6599\u3068\u914d\u5411\u306e\u5236\u5fa1\u304c\u5fc5\u8981\u3067\u3059\u3002\u3088\u308a\u660e\u78ba\u306a\u5207\u65ad\u8981\u6c42\u306e\u305f\u3081\u306b\u3001\u77f3\u82f1\u3001LN\u3001LT\u3001\u304a\u3088\u3073\u30e9\u30f3\u30ac\u30b5\u30a4\u30c8\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p><\/div><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.semiconductorcutting.com\/wp-content\/uploads\/2026\/10\/piezoelectric-crystals-hero.webp\" alt=\"\u7d30\u9577\u3044\u7d50\u6676\u6a19\u672c\u3092\u7528\u3044\u305f\u5727\u96fb\u7d50\u6676\u306e\u6587\u8108\" width=\"1600\" height=\"1000\"><\/div><\/header><div class=\"reading-layout\"><article class=\"reading-body\"><p>Piezoelectric crystals need the correct material and cut, not simply a thin, intact plate. Quartz, lithium niobate (LN), lithium tantalate (LT) and langasite should retain their own material identification and orientation records through machining. A matching outside shape does not make them interchangeable.<\/p>\n<p>The cutting team supplies a blank; the receiving team qualifies its geometry and functional suitability. Keep those responsibilities explicit when ordering piezoelectric crystals for a new experiment or substrate route.<\/p>\n<p>Vimfun SOM200 lists piezoelectric crystals as an application category. The category does not qualify every quartz, LN, LT or langasite composition and cut; suitability requires the actual material identification and a representative blank assessment.<\/p>\n<section id=\"section-1\"><h2>What Makes Piezoelectric Crystals Different?<\/h2>\n<p>In a piezoelectric material, suitable mechanical loading can produce an electrical response, and an applied electrical field can produce mechanical strain. The useful response depends on the material and the directions involved. A crystal&#39;s named cut is therefore a functional specification as well as a machining instruction.<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/www.semiconductorcutting.com\/wp-content\/uploads\/2026\/10\/piezoelectric-crystals-hero.webp\" alt=\"\u7d30\u9577\u3044\u7d50\u6676\u6a19\u672c\u3092\u7528\u3044\u305f\u5727\u96fb\u7d50\u6676\u306e\u6587\u8108\"><figcaption>\u30d0\u30ca\u30fc\u3067\u3082\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u53c2\u7167\u753b\u50cf\u3002\u8ffd\u52a0\u306e\u8a66\u884c\u3084\u6e2c\u5b9a\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002.<\/figcaption><\/figure>\n<figure><img decoding=\"async\" src=\"https:\/\/www.semiconductorcutting.com\/wp-content\/uploads\/2026\/10\/piezoelectric-crystals-figure-1.webp\" alt=\"Polished disks and a cylindrical sample\"><figcaption>Material samples shown for comparison; identities remain to be confirmed.<\/figcaption><\/figure>\n<p>\u306e <a href=\"https:\/\/en.wikipedia.org\/wiki\/Piezoelectricity\" target=\"_blank\" rel=\"noopener noreferrer dofollow\">piezoelectricity overview<\/a> explains the effect and lists material examples. In practical procurement, that background must be translated into a controlled drawing and material certificate. Knowing that a crystal is piezoelectric does not establish the correct plane for a particular component.<\/p>\n<\/section><section id=\"section-2\"><h2>Quartz: Keep the Cut Definition Attached<\/h2>\n<p>A piezoelectric quartz crystal converts suitable mechanical loading into an electrical response, with the response tied to direction in the lattice. A named cut is therefore a functional requirement, not a decorative shape. Quartz, LN, LT and langasite should be compared by material and cut specification before choosing the thickness and machining arrangement.<\/p>\n<p>Crystalline quartz should be distinguished from fused silica or other materials loosely described as quartz glass. Their structure and functional properties are different. If the job depends on a named crystal cut, the material certificate and orientation requirement must accompany the workpiece.<\/p>\n<p>For piezoelectric crystals made into quartz blanks, specify the cut designation using the receiving process&#39;s convention. Include any required angular tolerance and directional reference. An operator should not infer those details from a familiar acronym or choose a convenient fixture plane instead.<\/p>\n<p>\u306e <a href=\"https:\/\/www.semiconductorcutting.com\/ja\/quartz-wafer-slicing\/\">quartz wafer slicing<\/a> page provides the application context. A trial should preserve the orientation reference through preparation, mounting, separation and packaging, so that the final inspection can still identify the intended plane.<\/p>\n<\/section><section id=\"section-3\"><h2>Lithium Niobate: Define the Starting Material<\/h2>\n<p>Lithium niobate is commonly abbreviated LN. Its crystal identity, composition specification and supplied orientation belong in the request. Where a customer specifies additional material treatment or compositional control, that information must come from the material supplier and the drawing rather than a general machining description.<\/p>\n<p>NIST research characterizes elastic and piezoelectric coefficients for lithium niobate, illustrating why material properties need a stated measurement context. It does not justify transferring a coefficient or processing condition to every LN workpiece.<\/p>\n<p>For piezoelectric crystals of this type, separate the functional requirements from the saw acceptance sheet. The latter describes the blank geometry and condition; the former may require independent material or device-related verification.<\/p>\n<\/section><section id=\"section-4\"><h2>Lithium Tantalate: Do Not Substitute by Appearance<\/h2>\n<p>Lithium tantalate is commonly abbreviated LT. An LN and LT sample can be difficult to distinguish from a photograph, so image appearance is not sufficient material identification. Use the certificate, lot information and the supplier&#39;s traceability system.<\/p>\n<p>When comparing piezoelectric crystals for machining, do not copy a successful LN process directly into an LT production claim. The fixture, tool and release system need compatibility assessment with the actual stock. A short material trial can resolve practical uncertainties more reliably than a broad promise based on another crystal.<\/p>\n<p>Define the intended plate or wafer dimensions before selecting the cutting approach. Small research sections and repeated production substrates may require different setups even when the material name is the same.<\/p>\n<p>Use LN and LT as abbreviations only after the full material name has been established on the work order. Keep quartz and fused silica separate as well: the similar naming in everyday use is not permission to substitute one structure for another. Those identity checks prevent a mechanically successful trial from answering the wrong material question.<\/p>\n<p>The SOM200 introduction lists piezoelectric crystals among its application categories. That wording is a reason to discuss a trial, not evidence of qualified output for every LN, LT or langasite composition. No material-specific functional test is supplied by a general application list.<\/p>\n<p>For piezoelectric crystals, I&#39;d define the output in two boxes: the blank the saw must deliver, and the response or property the research team must verify. The trap is treating a dimensionally accepted blank as a functionally qualified device material. Piezoelectric crystals need that second check when the application depends on it.<\/p>\n<p>A functional cut starts with material identity.<\/p>\n<\/section><section id=\"section-5\"><h2>Langasite: Be Precise about the Composition<\/h2>\n<p>Langasite belongs to a family of crystals investigated for piezoelectric applications. Similar family names should not be treated as identical compositions. If the research project involves a related material, state its actual identity rather than relabeling it as langasite to simplify a quotation.<\/p>\n<p>For less familiar piezoelectric crystals, provide whatever verified mechanical and handling information the material supplier has available. Unknown compatibility should become a trial question rather than an assumed property.<\/p>\n<p>A supplier request should also state whether the sample is representative of a future production lot or a unique experimental crystal. That distinction changes what can reasonably be concluded from a successful cut.<\/p>\n<\/section><section id=\"section-6\"><h2>How is the crystal cut transferred to the fixture?<\/h2>\n<p>The crystal&#39;s functional plane must be converted into a setup reference. Define which measured or marked feature locates the crystal, how its orientation is checked and how the fixture preserves that relationship. External shape alone may not establish the required plane.<\/p>\n<p>Piezoelectric crystals should retain their identity and reference information when stock is cropped or divided. If a mark will be removed, transfer it through an approved documented method before cutting. Preserve slice order where it supports research traceability.<\/p>\n<p>Record whether an intentional offset is required and how its direction is defined. A magnitude without an axis or sign convention can leave the actual orientation ambiguous.<\/p>\n<\/section><section id=\"section-7\"><h2>What does a thickness measurement leave unverified?<\/h2>\n<p>Set the as-cut thickness using the receiving process&#39;s allowance for finishing. Specify the sampling pattern rather than relying on a single centre reading. If uniformity matters, the inspection needs to assess variation over the relevant area.<\/p>\n<p>For piezoelectric crystals, surface damage and edge condition can also affect the usability of a blank. State which defects are unacceptable and how they will be detected. A clean photograph does not establish the absence of internal cracks or the correct functional response.<\/p>\n<p>Avoid attributing all later failures to slicing. Compare records from the cut, release, cleaning and finishing stages so that any damage can be located within the process history.<\/p>\n<\/section><section id=\"section-8\"><h2>Can an LN result be transferred to LT?<\/h2>\n<p>The trial should resolve a defined uncertainty: whether the fixture preserves orientation, whether the intended thickness survives release, or whether the receiving operation can finish the blank. Do not change all variables at once and then describe the result as a material comparison.<\/p>\n<p>Document input geometry, material lot, plane, mounting condition, selected cutting arrangement and output position. Return representative blanks, including any rejected examples that help explain the result. Keep experimental settings separate from approved production instructions.<\/p>\n<p>With piezoelectric crystals, the test report should distinguish geometric acceptance from material or functional acceptance. If the supplier measured only thickness and visual defects, do not imply that it validated piezoelectric performance.<\/p>\n<\/section><section id=\"section-9\"><h2>Use a Material-Specific Transfer Sheet<\/h2>\n<p>Give each material its own transfer sheet. Record the full material identification, supplier lot, requested cut and receiving condition. Short labels such as LN and LT help discussion, but they do not replace the information needed to distinguish a particular supplied crystal from another stock item on the same bench.<\/p>\n<p>For piezoelectric crystals, a geometric drawing should explain how the material reference reaches the fixture. Show the original mark, the face or feature used for location and the relationship that must remain after cutting. A round plate photograph does not carry that information. Keep the reference record with the order rather than trying to reconstruct it after release.<\/p>\n<p>State which properties the cutting trial will establish and which it will not. Geometry, edge condition and handling observations may belong to the machining report. Device performance or material coefficients require their own qualification. Do not write a saw acceptance criterion that can only be answered by a later device test without naming that dependency.<\/p>\n<p>Prepare release and cleaning requirements with the material owner. Different material identities should not inherit an unreviewed procedure because their blanks look similar. The purpose of the transfer sheet is to expose those questions, not to provide a universal chemistry or recipe in an introductory article.<\/p>\n<p>A comparison of piezoelectric crystals should also distinguish source evidence from trial evidence. A publication can explain why a material or cut matters. It cannot demonstrate that a particular mounted sample survived the proposed release arrangement. Cite the publication for its actual contribution and return to the job record for qualification.<\/p>\n<p>When samples are selected for downstream work, keep their positions and previous processing states visible. A corrected or specially selected blank can be useful for evaluating the next operation, but it should not silently represent routine output from the entire batch.<\/p>\n<p>The next practical step is an agreed handoff rather than a longer material list. Ask the receiving team to confirm identity, cut, geometry and the inspection boundary. Once these are settled, the equipment discussion can address a defined task instead of an assortment of visually similar plates.<\/p>\n<div class=\"table-scroll\"><table>\n<thead>\n<tr>\n<th>\u6c7a\u5b9a\u30d5\u30a3\u30fc\u30eb\u30c9<\/th>\n<th>\u4fdd\u6301\u3059\u308b\u8a3c\u62e0<\/th>\n<\/tr>\n<\/thead>\n<tbody><tr>\n<td>Material record<\/td>\n<td>Full identification, composition\/cut and lot<\/td>\n<\/tr>\n<tr>\n<td>Fixture transfer<\/td>\n<td>Reference feature and retained direction<\/td>\n<\/tr>\n<tr>\n<td>Qualification scope<\/td>\n<td>Machining observations versus device requirements<\/td>\n<\/tr>\n<\/tbody><\/table><\/div>\n<\/section><section id=\"section-10\"><h2>\u8cea\u554f\u306b\u7b54\u3048\u308b\u30da\u30fc\u30b8\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<\/h2>\n<p>This article answers: Which material and cut information must remain attached to the machining request? It does not replace the following equipment or application scopes.<\/p>\n<div class=\"table-scroll\"><table>\n<thead>\n<tr>\n<th>\u3042\u306a\u305f\u306e\u8cea\u554f<\/th>\n<th>\u95a2\u9023\u30da\u30fc\u30b8<\/th>\n<th>\u5883\u754c<\/th>\n<\/tr>\n<\/thead>\n<tbody><tr>\n<td>Need the quartz wafer slicing context?<\/td>\n<td><a href=\"https:\/\/www.semiconductorcutting.com\/ja\/quartz-wafer-slicing\/\">quartz wafer slicing<\/a><\/td>\n<td>\u53d7\u4fe1\u30bf\u30b9\u30af\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u307e\u305f\u306f\u30d7\u30ed\u30bb\u30b9\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8<\/td>\n<\/tr>\n<\/tbody><\/table><\/div>\n<\/section><section id=\"section-11\"><h2>\u3088\u304f\u3042\u308b\u3054\u8cea\u554f<\/h2>\n<h3>Are LN and LT interchangeable piezoelectric crystals?<\/h3>\n<p>No. Keep their material records and requirements distinct. A similar shape does not establish identical processing or receiving conditions. Piezoelectric crystals should be assessed using their actual identification and the specified cut rather than an abbreviation alone.<\/p>\n<h3>Does machining qualify a device made from piezoelectric crystals?<\/h3>\n<p>Not from a dimensional cutting trial alone. Separate the features measured at machining from the properties established by material or device qualification. State who owns each result so that a usable blank is not mistaken for a qualified component.<\/p>\n<h3>Which records belong in a piezoelectric crystals enquiry?<\/h3>\n<p>Supply material identity, orientation information, dimensions, the receiving condition and release requirements. Include a reference drawing or certificate where applicable. Those inputs are more useful than asking for a generic thin plate without saying what it must retain.<\/p>\n<\/section><section id=\"section-12\"><h2>Prepare the Handoff to the Next Operation<\/h2>\n<p>Packaging should protect surfaces and preserve material identity. Different crystal cuts can look alike after machining, so labels need to identify the lot, plane and slice or sample number. The receiving team should not have to reconstruct that information from an email thread.<\/p>\n<p>For a cutting enquiry, send the material certificate, orientation drawing, incoming dimensions, blank thickness, finishing allowance and acceptance method. Include release or cleaning restrictions from the approved process documentation.<\/p>\n<p>Piezoelectric crystals become useful substrates through controlled material and orientation handling as well as cutting. Keeping those requirements visible allows the machining trial to answer a focused question and prevents a geometrically correct blank from being mistaken for a fully qualified functional component.<\/p>\n<p>Attach the actual material certificate, cut designation, reference direction, blank thickness and finishing allowance. Assign orientation and functional qualification to named test methods. Package the piezoelectric crystals with their lot and slice identifiers, so that a later result can still be traced to the stock and plane used in the trial.<\/p>\n\n<\/section><\/article><aside class=\"reading-sidebar\"><div class=\"toc toc-desktop\"><strong>\u8a18\u4e8b\u6982\u8981<\/strong><nav aria-label=\"\u8a18\u4e8b\u306e\u5185\u5bb9\"><ol><li><a href=\"#section-1\">What Makes Piezoelectric Crystals Different?<\/a><\/li><li><a href=\"#section-2\">Quartz: Keep the Cut Definition Attached<\/a><\/li><li><a href=\"#section-3\">Lithium Niobate: Define the Starting Material<\/a><\/li><li><a href=\"#section-4\">Lithium Tantalate: Do Not Substitute by Appearance<\/a><\/li><li><a href=\"#section-5\">Langasite: Be Precise about the Composition<\/a><\/li><li><a href=\"#section-6\">How is the crystal cut transferred to the fixture?<\/a><\/li><li><a href=\"#section-7\">What does a thickness measurement leave unverified?<\/a><\/li><li><a href=\"#section-8\">Can an LN result be transferred to LT?<\/a><\/li><li><a href=\"#section-9\">Use a Material-Specific Transfer Sheet<\/a><\/li><li><a href=\"#section-10\">\u8cea\u554f\u306b\u7b54\u3048\u308b\u30da\u30fc\u30b8\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<\/a><\/li><li><a href=\"#section-11\">\u3088\u304f\u3042\u308b\u3054\u8cea\u554f<\/a><\/li><li><a href=\"#section-12\">Prepare the Handoff to the Next Operation<\/a><\/li><\/ol><\/nav><\/div><details class=\"toc toc-mobile\"><summary>\u8a18\u4e8b\u6982\u8981<\/summary><nav aria-label=\"\u8a18\u4e8b\u306e\u5185\u5bb9\"><ol><li><a href=\"#section-1\">What Makes Piezoelectric Crystals Different?<\/a><\/li><li><a href=\"#section-2\">Quartz: Keep the Cut Definition Attached<\/a><\/li><li><a href=\"#section-3\">Lithium Niobate: Define the Starting Material<\/a><\/li><li><a href=\"#section-4\">Lithium Tantalate: Do Not Substitute by Appearance<\/a><\/li><li><a href=\"#section-5\">Langasite: Be Precise about the Composition<\/a><\/li><li><a href=\"#section-6\">How is the crystal cut transferred to the fixture?<\/a><\/li><li><a href=\"#section-7\">What does a thickness measurement leave unverified?<\/a><\/li><li><a href=\"#section-8\">Can an LN result be transferred to LT?<\/a><\/li><li><a href=\"#section-9\">Use a Material-Specific Transfer Sheet<\/a><\/li><li><a href=\"#section-10\">\u8cea\u554f\u306b\u7b54\u3048\u308b\u30da\u30fc\u30b8\u3092\u9078\u629e\u3057\u3066\u304f\u3060\u3055\u3044<\/a><\/li><li><a href=\"#section-11\">\u3088\u304f\u3042\u308b\u3054\u8cea\u554f<\/a><\/li><li><a href=\"#section-12\">Prepare the Handoff to the Next Operation<\/a><\/li><\/ol><\/nav><\/details><\/aside><\/div><\/main>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>\u5727\u96fb\u7d50\u6676\u306f\u3001\u30b9\u30e9\u30a4\u30b9\u524d\u306b\u6750\u6599\u3068\u914d\u5411\u306e\u5236\u5fa1\u304c\u5fc5\u8981\u3067\u3059\u3002\u3088\u308a\u660e\u78ba\u306a\u5207\u65ad\u8981\u6c42\u306e\u305f\u3081\u306b\u3001\u77f3\u82f1\u3001LN\u3001LT\u3001\u304a\u3088\u3073\u30e9\u30f3\u30ac\u30b5\u30a4\u30c8\u3092\u6bd4\u8f03\u3057\u3066\u304f\u3060\u3055\u3044\u3002.<\/p>","protected":false},"author":6,"featured_media":6182,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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