{"title":"langasite中SAW的数值与实验研究","authors":"I. B. Yakovkin, R. Taziev, A. Kozlov","doi":"10.1109/ULTSYM.1995.495604","DOIUrl":null,"url":null,"abstract":"The present paper contains the complete numerical investigation of surface acoustics waves in langasite. The results are comprehensive contour-map and three-dimensional loci for velocity (Vo,Vm), beam steering (/spl theta//sup 1/), electromechanical coupling factor (K/sup 2/), first and second temperature derivatives of delay times (TCD1, TCD2). Optimal cuts for multimode resonators (TCD1=0), for bandpass filter (K/sup 2/=0.54%) and for sensors (TCD1=32.82 ppm//spl deg/C) are determined. The rotated Z+25/spl deg/ cut has large K/sup 2/=0.26% and TCD1=0 at the room temperature. The surface transverse wave that propagates over this cut in X+90/spl deg/ exists only at the metalized surface.","PeriodicalId":268177,"journal":{"name":"1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium","volume":"56 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1995-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"19","resultStr":"{\"title\":\"Numerical and experimental investigation SAW in langasite\",\"authors\":\"I. B. Yakovkin, R. Taziev, A. Kozlov\",\"doi\":\"10.1109/ULTSYM.1995.495604\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The present paper contains the complete numerical investigation of surface acoustics waves in langasite. The results are comprehensive contour-map and three-dimensional loci for velocity (Vo,Vm), beam steering (/spl theta//sup 1/), electromechanical coupling factor (K/sup 2/), first and second temperature derivatives of delay times (TCD1, TCD2). Optimal cuts for multimode resonators (TCD1=0), for bandpass filter (K/sup 2/=0.54%) and for sensors (TCD1=32.82 ppm//spl deg/C) are determined. The rotated Z+25/spl deg/ cut has large K/sup 2/=0.26% and TCD1=0 at the room temperature. The surface transverse wave that propagates over this cut in X+90/spl deg/ exists only at the metalized surface.\",\"PeriodicalId\":268177,\"journal\":{\"name\":\"1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium\",\"volume\":\"56 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1995-11-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"19\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ULTSYM.1995.495604\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"1995 IEEE Ultrasonics Symposium. Proceedings. An International Symposium","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ULTSYM.1995.495604","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Numerical and experimental investigation SAW in langasite
The present paper contains the complete numerical investigation of surface acoustics waves in langasite. The results are comprehensive contour-map and three-dimensional loci for velocity (Vo,Vm), beam steering (/spl theta//sup 1/), electromechanical coupling factor (K/sup 2/), first and second temperature derivatives of delay times (TCD1, TCD2). Optimal cuts for multimode resonators (TCD1=0), for bandpass filter (K/sup 2/=0.54%) and for sensors (TCD1=32.82 ppm//spl deg/C) are determined. The rotated Z+25/spl deg/ cut has large K/sup 2/=0.26% and TCD1=0 at the room temperature. The surface transverse wave that propagates over this cut in X+90/spl deg/ exists only at the metalized surface.
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