Pressure-induced spin state transition in Co-Fe cyanide

被引：14

作者：

Hanawa, H ^{[1
]}

Moritomo, Y ^{[1
]}

Tateishi, J ^{[1
]}

Ohishi, Y ^{[1
]}

Kato, K ^{[1
]}

机构：

[1] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2004年 / 73卷 / 10期

关键词：

Co-Fe cyanide; spin state transition; pressure effect;

D O I：

10.1143/JPSJ.73.2759

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Hydrostatic pressure effects on the structural and magnetic properties were investigated for two potassium-cobalt-iron hexacyanides, K0.12Co[Fe(CN)(6)](0.70)(.)4.87H(2)O (high [Fe(CN)(6)] vacancy concentration v) and K0.36Co[Fe(CN)(6)](0.82)(.)4.56H(2)O (low-v). In both the compounds, we observed a pressure-induced volume transition at 300 K from the large volume (LV) phase to the small volume (SV) phase. In the high-v compound, the magnitude of the effective moment mu(eff) gradually decreases with pressure increases. We ascribed it to the gradual spin state transformation of Co3+ from the high-spin state (S = 2) to the low-spin state (S = 0).

引用

页码：2759 / 2762

页数：4

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