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

Randy S. Fishman; William W. Shum; Joel S. Miller

doi:10.1103/PhysRevB.81.172407

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

Randy S. Fishman
, William W. Shum
, Joel S. Miller

Materials Theory

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

The molecule-based magnet [Ru₂ (O₂CMe) 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 Ru₂ complex.

Original language	English
Article number	172407
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevB.81.172407
State	Published - May 21 2010

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title = "Pressure-induced phase transition in a molecule-based magnet with interpenetrating sublattices",

abstract = "The molecule-based magnet [Ru2 (O2CMe) 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 Ru2 complex.",

author = "Fishman, \{Randy S.\} and Shum, \{William W.\} and Miller, \{Joel S.\}",

year = "2010",

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doi = "10.1103/PhysRevB.81.172407",

language = "English",

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journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

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AU - Fishman, Randy S.

AU - Shum, William W.

AU - Miller, Joel S.

PY - 2010/5/21

Y1 - 2010/5/21

N2 - The molecule-based magnet [Ru2 (O2CMe) 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 Ru2 complex.

AB - The molecule-based magnet [Ru2 (O2CMe) 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 Ru2 complex.

UR - https://www.scopus.com/pages/publications/77955464238

U2 - 10.1103/PhysRevB.81.172407

DO - 10.1103/PhysRevB.81.172407

M3 - Article

AN - SCOPUS:77955464238

SN - 1098-0121

VL - 81

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

M1 - 172407

ER -

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

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