CORRELATION EFFECTS AMONG THERMAL DISPLACEMENTS OF ATOMS FROM DIFFUSE NEUTRON SCATTERING MEASUREMENTS

摘要：

Diffuse neutron scattering intensities from ionic crystals, covalent crystals and metal crystals are analyzed by including the correlation effects among thermal displacements of atoms into the function describing background intensity. The obtained values of correlation effects among first nearest neighboring atoms are～0.7 near room temperature. The values of the correlation effects do not depend much on the type of the crystal binding near room temperature. The values of correlation effects decrease rapidly with the increase of inter-atomic distances. The correlation effects also decrease with the decrease of temperature. From the parameters of Debye-Waller temperature factor and the values of correlation effects, the force constants among first, second and third nearest neighboring atoms are obtained.

作者: TAKASHI SAKUMA OSAMU KAMISHIMA NAOKI IGAWA SAUMYA R. MOHAPATRA JO YOKOKAWA NORIFUMI SHIMIZU NOBUHIRO ISOZAKI HIROYUKI UEHARA XIANG LIAN KHAIRUL BASAR HARUYUKI TAKAHASHI

作者单位: Institute of Applied Beam Science, Ibaraki University, Mito 310-8512, Japan Department of Physics, Faculty of Engineering, Setsunan University,Neyagawa 572-8508, Japan Quantum Beam Science Directorate, Japan Atomic Energy Agency, Tokai 319-1195, Japan College of Physics and Electronics Information, Inner Mongolia University for the Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung,Bandung 40132, Indonesia Institute of Applied Beam Science, Ibaraki University, Hitachi 316-8511, Japan

会议类型: 国际会议

会议名称: The 12th Asian Conference on Solid State Ionics(第十二届亚洲固态离子学会议暨第十五届中国固态离子学会议)

会议地点: 武汉

会议语种:英文

页码: 439-445

在线出版日期: 2010-05-02（万方平台首次上网日期，不代表论文的发表时间）