Pressure-induced phase transition in a molecule-based magnet with interpenetrating sublattices

被引：19

作者：

Fishman, Randy S. ^{[1
]}

Shum, William W. ^{[2
,3
]}

Miller, Joel S. ^{[2
]}

机构：

[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[2] Univ Utah, Dept Chem, Salt Lake City, UT 84112 USA

[3] Cornell Univ, Dept Chem, Ithaca, NY 14853 USA

来源：

PHYSICAL REVIEW B | 2010年 / 81卷 / 17期

基金：

美国国家科学基金会;

关键词：

LOW-SPIN TRANSITION; INDUCED VALENCE; AXIAL LIGANDS;

D O I：

10.1103/PhysRevB.81.172407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The molecule-based magnet [Ru(2)(O(2)CMe)(4)](3)[Cr(CN)(6]) contains two interpenetrating sublattices with sublattice moments confined to the cubic diagonals. At ambient pressure, a field of about 850 Oe rotates the antiferromagnetically coupled sublattice moments toward the field direction, producing a wasp-waisted magnetization curve. Up to 7 kbar, the sublattice moments increase with pressure due to the enhanced exchange coupling between the Cr(III) and Ru(II/III)(2) spins on each sublattice. Above 7 kbar, the sublattice moment drops by about half and the parallel linear susceptibility of each sublattice rises dramatically. The phase transition at 7 kbar is most likely caused by a high-to-low-spin transition on each Ru(2) complex.

引用

页数：4

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