FIELD-INDUCED VALENCE TRANSITION OF EU(PD1-XPTX)2SI2
FIELD-INDUCED VALENCE TRANSITION OF EU(PD1-XPTX)2SI2
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EU(PD1-XPTX)2SI2 的场致价态跃迁
DOI：
10.1103/physrevb.55.12474
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发表时间：
1997
影响因子：
3.7
通讯作者：
T. Gotō
中科院分区：
文献类型：
--
作者：
A. Mitsuda;H. Wada;M. Shiga;H. Katori;T. Gotō
测量了中间价体系Eu（Pd 12 xPtx）2Si 2（0<x<0.15）的磁化率和高场磁化强度。在100 T的低温强场下，所有化合物都发生了一级价态跃迁。这种价态转变是一阶的，伴随着一个大的滞后，这是在一个连续的价态变化对温度的对比。基于组态间涨落~ICF！模型，讨论了温度和场诱导的价态跃迁。结果表明，即使体系随温度变化呈现连续的价态跃迁，磁场也能诱导一级价态跃迁。在有限温度下的变磁行为也被ICF模型定性地理解。@S0163-1829 ~97！06817-3#
The magnetic susceptibility and high-field magnetization have been measured for the intermediate valence system Eu(Pd 12xPtx)2Si2 with 0<x<0.15. A first-order valence transition is observed for all the compounds under high field of 100 T at low temperatures. This valence transition is of first order accompanied with a large hysteresis, which is in contrast to a continuous valence change against temperature. Based on the interconfigurational fluctuation~ICF! model, the temperatureand field-induced valence transitions are discussed. It is found that a first-order valence transition can be induced by magnetic field, even if the system shows a continuous valence transition against temperature. Metamagnetic behavior at finite temperatures is also understood qualitatively by the ICF model. @S0163-1829 ~97!06817-3#