{"title":"合金化对涡晶 ScxAl1-xN 的弹性、热和超声特性的影响","authors":"Anurag Singh , Devraj Singh , Sudhanshu Tripathi , Rabah Khenata","doi":"10.1016/j.physleta.2024.130010","DOIUrl":null,"url":null,"abstract":"<div><div>The influence of alloying on elastic, thermal and ultrasonic properties has been investigated for wurtzite (wz) structured Sc<sub>x</sub>Al<sub>1-x</sub>N alloy at room temperature along the unique axis. Firstly, the higher order elastic constants have been computed by means of Lennard-Jones potential model. The mechanical constants are estimated to determine mechanical properties like stability, stiffness, compressibility, hardness and ductility etc. The ultrasonic wave velocities have been appraised using the second order elastic constants (SOECs) at different angle of propagation, which have been further used to calculate thermal properties like Debye temperatures, thermal conductivities and thermal relaxation time of Sc<sub>x</sub>Al<sub>1-x</sub>N at room temperature (300 K). Finally, the coefficient of ultrasonic attenuation due to the thermoelastic relaxation process and due to the phonon-viscosity interaction process has been analyzed for wz- Sc<sub>x</sub>Al<sub>1-x</sub>N at 300K. The achieved results have been interpreted with existing results on wz- Sc<sub>x</sub>Al<sub>1-x</sub>N as well as with other wz materials.</div></div>","PeriodicalId":20172,"journal":{"name":"Physics Letters A","volume":null,"pages":null},"PeriodicalIF":2.3000,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Impact of alloying on elastic, thermal and ultrasonic properties of wurtzite ScxAl1-xN\",\"authors\":\"Anurag Singh , Devraj Singh , Sudhanshu Tripathi , Rabah Khenata\",\"doi\":\"10.1016/j.physleta.2024.130010\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The influence of alloying on elastic, thermal and ultrasonic properties has been investigated for wurtzite (wz) structured Sc<sub>x</sub>Al<sub>1-x</sub>N alloy at room temperature along the unique axis. Firstly, the higher order elastic constants have been computed by means of Lennard-Jones potential model. The mechanical constants are estimated to determine mechanical properties like stability, stiffness, compressibility, hardness and ductility etc. The ultrasonic wave velocities have been appraised using the second order elastic constants (SOECs) at different angle of propagation, which have been further used to calculate thermal properties like Debye temperatures, thermal conductivities and thermal relaxation time of Sc<sub>x</sub>Al<sub>1-x</sub>N at room temperature (300 K). Finally, the coefficient of ultrasonic attenuation due to the thermoelastic relaxation process and due to the phonon-viscosity interaction process has been analyzed for wz- Sc<sub>x</sub>Al<sub>1-x</sub>N at 300K. The achieved results have been interpreted with existing results on wz- Sc<sub>x</sub>Al<sub>1-x</sub>N as well as with other wz materials.</div></div>\",\"PeriodicalId\":20172,\"journal\":{\"name\":\"Physics Letters A\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.3000,\"publicationDate\":\"2024-10-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physics Letters A\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0375960124007047\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics Letters A","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0375960124007047","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Impact of alloying on elastic, thermal and ultrasonic properties of wurtzite ScxAl1-xN
The influence of alloying on elastic, thermal and ultrasonic properties has been investigated for wurtzite (wz) structured ScxAl1-xN alloy at room temperature along the unique axis. Firstly, the higher order elastic constants have been computed by means of Lennard-Jones potential model. The mechanical constants are estimated to determine mechanical properties like stability, stiffness, compressibility, hardness and ductility etc. The ultrasonic wave velocities have been appraised using the second order elastic constants (SOECs) at different angle of propagation, which have been further used to calculate thermal properties like Debye temperatures, thermal conductivities and thermal relaxation time of ScxAl1-xN at room temperature (300 K). Finally, the coefficient of ultrasonic attenuation due to the thermoelastic relaxation process and due to the phonon-viscosity interaction process has been analyzed for wz- ScxAl1-xN at 300K. The achieved results have been interpreted with existing results on wz- ScxAl1-xN as well as with other wz materials.
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Physics Letters A offers an exciting publication outlet for novel and frontier physics. It encourages the submission of new research on: condensed matter physics, theoretical physics, nonlinear science, statistical physics, mathematical and computational physics, general and cross-disciplinary physics (including foundations), atomic, molecular and cluster physics, plasma and fluid physics, optical physics, biological physics and nanoscience. No articles on High Energy and Nuclear Physics are published in Physics Letters A. The journal''s high standard and wide dissemination ensures a broad readership amongst the physics community. Rapid publication times and flexible length restrictions give Physics Letters A the edge over other journals in the field.
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