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Effect of hydrostatic pressure on the low-temperature phase transitions in Rb_2ZnBr_4

Journal of the Physical Society of Japan Volume 68 Issue 8 Page 2679-2683
published_at 1999
2008010270.pdf
[fulltext] 315 KB
Title
Effect of hydrostatic pressure on the low-temperature phase transitions in Rb_2ZnBr_4
Creators Shigematsu Hirotake
Creators Kubota Masato
Creators Nishi Masakazu
Creators Mashiyama Hiroyuki
Creators Matsui Tsuneo
Creator Keywords
Rb_2ZnBr_4 structural phase transition neutron scattering hydrostatic pressure
The effect of hydrostatic pressure on the low-temperature structural phase transitions in Rb_2ZnBr_4 has been investigated by the use of neutron scattering technique. The phase III-to-IV transition temperature, T_3=112 K at atmospheric pressure, increased by applying pressure with a rate of 7 K/kbar. The phase IV-to-V transition temperature, T_4=76 K at atmospheric pressure, decreased by applying pressure with a rate of -45 K/kbar. At high pressure, two high-order pseudo-commensurate phases characterized by wave vectors q_z ≒ (3)/(11) and (4)/(15) were observed in addition to the already known commensurate ones of q_z=(2)/(7) and (1)/(4). The space group of the commensurate phase of q_z=(1)/(4) under high pressure was suggested to be P2_1/c11 from the extinction rule.
Languages eng
Resource Type journal article
Publishers The Physical Society of Japan
Date Issued 1999
Rights
Copyright c (1999)The Physical Society of Japan()
File Version Author’s Original
Access Rights open access
Relations
[ISSN]0031-9015
[NCID]AA00704814
info:doi/10.1143/JPSJ.68.2679
[isVersionOf] [URI]http://www.ipap.jp/jpsj/index.html
Schools 大学院理工学研究科(理学)