Huge thermal hysteresis loop and a hidden stable phase in a charge-transfer phase transition of Rb0.64Mn[Fe(CN)6]0.88•1.7H2O

被引：51

作者：

Tokoro, Hiroko

Miyashita, Seiji

Hashimoto, Kazuhito

Ohkoshi, Shin-ichi

机构：

[1] Univ Tokyo, Sch Engn, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan

[2] Univ Tokyo, Sch Sci, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[3] Univ Tokyo, Sch Sci, Dept Chem, Bunkyo Ku, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.73.172415

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The charge-transfer phase transition in (Rb0.64MnII)-Mn-I[Fe-III(CN)(6)](0.88)center dot 1.7H(2)O exhibits a surprisingly large thermal hysteresis loop of 138 K, i.e., the phase transition temperatures are 165 K (=T-1/2 down arrow) and 303 K (=T-1/2 up arrow). Switching between Fe-III-CN-Mn-II and Fe-II-CN-Mn-III causes this phase transition. When the sample is rapidly cooled, a hidden stable phase of Fe-III-CN-Mn-II is observed, which relaxes to Fe-II-CN-Mn-III at 114 K with a warming. A thermodynamical model under thermal equilibrium condition demonstrates this large thermal hysteresis loop and proves the existence of the hidden stable phase.

引用

页数：4

共 33 条

[1] A charge-transfer-induced spin transition in a discrete complex:: The role of extrinsic factors in stabilizing three electronic isomeric forms of a cyanide-bridged Co/Fe cluster [J].