DEPENDENCE OF THE DYNAMIC CENTRAL PEAK ON DEUTERIUM CONTENT IN PARA-ELECTRIC KH2PO4

被引:17
作者
BLINC, R [1 ]
SLAK, J [1 ]
SABARRETO, FC [1 ]
PIRES, AST [1 ]
机构
[1] UNIV FED MINAS GERAIS, INST CIENCIAS EXACTAS, DEPT FIS, BELO HORIZONTE, MG, BRAZIL
关键词
D O I
10.1103/PhysRevLett.42.1000
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Measurements of the temperature and frequency dependence of the proton and deuteron spin-lattice relaxation time T1 show the presence of a dynamic central peak in paraelectric KH2PO4 which exhibits a dramatic narrowing on deuteration. The observed centralpeak narrowing on deuteration qualitatively agrees with a continued-fraction calculation demonstrating that small dynamic intrinsic clusters may occur in KH2PO4-type crystals above Tc in addition to large static defect-induced clusters observed in light-scattering experiments. © 1979 The American Physical Society.
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页码:1000 / 1003
页数:4
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