Colla E V, Chao L K, Weissman M B, Viehland D D
Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801-3080, USA.
Phys Rev Lett. 2000 Oct 2;85(14):3033-6. doi: 10.1103/PhysRevLett.85.3033.
A crossover as a function of temperature is found in the zero-field aging properties of the relaxor ferroelectric Pb(Mg(1/3)Nb(2/3))O3. Below a temperature near which nonlinear susceptibility has indicated a suspected phase transition, the time-frequency dependence shows simple scale-independent behavior resembling that for spin glasses. As in spin glasses, high temperature aging is stable as further aging occurs at lower temperature, but not vice versa, indicating hierarchical state arrangement. A more general interpretation of such effects is briefly discussed.
在弛豫铁电体Pb(Mg(1/3)Nb(2/3))O3的零场老化特性中发现了作为温度函数的交叉现象。在一个温度附近，低于该温度时非线性磁化率已表明存在疑似相变，此时时间-频率依赖性呈现出类似于自旋玻璃的简单标度无关行为。与自旋玻璃一样，高温老化在进一步低温老化时是稳定的，但反之则不然，这表明存在分层状态排列。本文简要讨论了对此类效应更一般的解释。
