High-Pressure Synthesis and Thermal Transport Properties of Polycrystalline BAs_x

作     者：Lei Gao Qiulin Liu Jiawei Yang Yue Wu Zhehong Liu Shijun Qin Xubin Ye Shifeng Jin Guodong Li Huaizhou Zhao Youwen Long 高磊;刘求林;杨佳伟;吴跃;刘哲宏;覃湜俊;叶旭斌;金士峰;李国栋;赵怀周;龙有文

作者机构：Beijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical SciencesUniversity of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Heavy Oil ProcessingCollege of New Energy and MaterialsChina University of PetroleumBeijing 102249China Yangtze River Delta Physics Rearch CenterLiyang 213300China Songshan Lake Materials LaboratoryDongguan 523808China 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2020年第37卷第6期

页      面：53-56页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 0702[理学-物理学] 

基　　金：Supported by the National Key R&D Program of China(Grant Nos.2018YFE0103200 and 2018YFA0305700) the National Natural Science Foundation of China(Grant Nos.51772324,11934017,11921004,and 11574378) the Chinese Academy of Sciences(Grant Nos.QYZDB–SSW–SLH013 and GJHZ1773) 

主　　题：synthesis. method. arsenic 

摘      要：Polycrystalline BAsx(x=0.80-1.10)compounds with different boron-to-arsenic elemental molar ratios were synthesized by a high-pressure and high-temperature sintering *** with other ambient-pressure synthesis methods,high pressure can significantly promote the reaction speed as well as the reaction *** the content of arsenic increases from x=0.91 to 1.10,the thermal conductivity of BAsx gradually increases from 53 to 65 W·m-1·***,the temperature dependence of thermal conductivities of these samples reveals an Umklapp scattering due to the increasing phonon *** work provides a highly efficient method for polycrystalline BAs synthesis.