The structural Phase Transitions in LiK_<0.50>Rb_<0.50>SO_4 Mixed Crystal

スポンサーリンク

概要

• 論文の詳細を見る

• The strtrcttrral r>laase trarnsitions of the LiKo.soRbo.soSO,t rraixed crvstal xvere investiwated bvRaraaan spectroscopy and neutron poxvder difl'raction Llp to 800 K. The restrlts show two firstorder strtrctural transitions, quite arnalogotrs to the transitiou?s in LiKSO,j. Ranaan spectrat anddif['raction profiles xvere cotaapatible xvith averstge syu'na?rtetries CJ., C3 and Dig for the threeobserved plaases, with incr'easing teraaper?tttrre. Tire transitions, Tooth reconstrtrctive, are srnear'edoxzer l;trge terauperattrre iratervarls, 1e?tding to the coexistence of' RQlIl2l11 bands and neutron pe?tks ofthe dif['erent pltases ;xnd to an anotaaalotrs belaax'ior of' the lattice pararaaeters into these intervatls.In the hexsrgonal phase, the cell VOILIIII(Ill presents a laysteretic belt;tvior depending on the sauaaplethermal history. Ranaan spectra of the orthorhotnbic jchase shows the high rotational disorderof tlae 80,j ions, associated with tlae higlt Li positional disorder in tlais high condtrcting phase.

• 1998-12-15

著者

• Pimenta M

  Departamento De Fisica-icex-ufmg

• Pimenta Marcos

  Departamento De Fisica Universidade De Federal De Minas Gerais

• Bourson Patrice

  Laboratorie Mops-supelec Et Universite De Metz

• Ayala Alejandro

  Departamento De Fisica-icex-ufmg

• RIGHI Ariete

  Departamento de Fisica-ICEx-UFMG

• MOREIRA Roberto

  Departamento de Fisica-ICEx-UFMG

関連論文

• The structural Phase Transitions in LiK_Rb_SO_4 Mixed Crystal
• Polyaniline-doped benzene sulfonic acid/epoxy resin composites : structural, morphological, thermal and dielectric behaviors

スポンサーリンク