Magnetic properties of synthetic libethenite Cu2PO 4OH: A new spin-gap system

Alexei A. Belik; Hyun Joo Koo; Myung Hwan Whangbo; Naohito Tsujii; Panče Naumov; Eiji Takayama-Muromachi

doi:10.1021/ic7008418

Magnetic properties of synthetic libethenite Cu₂PO ₄OH: A new spin-gap system

Alexei A. Belik, Hyun Joo Koo, Myung Hwan Whangbo, Naohito Tsujii, Panče Naumov, Eiji Takayama-Muromachi

Chemistry

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

Abstract

Synthetic mineral libethenite Cu₂PO₄OH was prepared by the hydrothermal method, and its structure at 200 K was refined by single-crystal X-ray diffraction. The structure of Cu₂PO ₄OH is built up from Cu2₂O₆(OH)₂ dimers of edge-sharing Cu2O₄(OH) trigonal bipyramids and [Cu1 ₂O₆(OH)₂]_∝ chains of edge-sharing Cu1O₄(OH)₂ octahedra. Magnetic properties of Cu₂PO₄OH were investigated by magnetic susceptibility, magnetization, and specific heat measurements. Cu₂PO₄OH is a spin-gap system with a spin gap of about 139 K. It was shown by spin dimer analysis that, to a first approximation, the magnetic structure of Cu ₂PO₄OH is described by an isolated square-spin cluster model defined by the Cu1-O-Cu2 superexchange J with Cu1⋯Cu2 = 3.429 Å. The fitting analysis of the magnetic susceptibility data with a square-spin cluster model results in J/k_B = 138 K. Specific heat data show that Cu₂PO₄OH does not undergo a long-range magnetic ordering down to 1.8 K. We also report vibrational properties studied with Raman spectroscopy and the thermal stability of Cu₂PO₄OH.

Original language	English (US)
Pages (from-to)	8684-8689
Number of pages	6
Journal	Inorganic Chemistry
Volume	46
Issue number	21
DOIs	https://doi.org/10.1021/ic7008418
State	Published - Oct 15 2007

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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@article{51be7d1c446f40cf958b3b015d64bd18,

title = "Magnetic properties of synthetic libethenite Cu2PO 4OH: A new spin-gap system",

abstract = "Synthetic mineral libethenite Cu2PO4OH was prepared by the hydrothermal method, and its structure at 200 K was refined by single-crystal X-ray diffraction. The structure of Cu2PO 4OH is built up from Cu22O6(OH)2 dimers of edge-sharing Cu2O4(OH) trigonal bipyramids and [Cu1 2O6(OH)2]∝ chains of edge-sharing Cu1O4(OH)2 octahedra. Magnetic properties of Cu2PO4OH were investigated by magnetic susceptibility, magnetization, and specific heat measurements. Cu2PO4OH is a spin-gap system with a spin gap of about 139 K. It was shown by spin dimer analysis that, to a first approximation, the magnetic structure of Cu 2PO4OH is described by an isolated square-spin cluster model defined by the Cu1-O-Cu2 superexchange J with Cu1⋯Cu2 = 3.429 {\AA}. The fitting analysis of the magnetic susceptibility data with a square-spin cluster model results in J/kB = 138 K. Specific heat data show that Cu2PO4OH does not undergo a long-range magnetic ordering down to 1.8 K. We also report vibrational properties studied with Raman spectroscopy and the thermal stability of Cu2PO4OH.",

author = "Belik, {Alexei A.} and Koo, {Hyun Joo} and Whangbo, {Myung Hwan} and Naohito Tsujii and Pan{\v c}e Naumov and Eiji Takayama-Muromachi",

year = "2007",

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doi = "10.1021/ic7008418",

language = "English (US)",

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T1 - Magnetic properties of synthetic libethenite Cu2PO 4OH

T2 - A new spin-gap system

AU - Belik, Alexei A.

AU - Koo, Hyun Joo

AU - Whangbo, Myung Hwan

AU - Tsujii, Naohito

AU - Naumov, Panče

AU - Takayama-Muromachi, Eiji

PY - 2007/10/15

Y1 - 2007/10/15

N2 - Synthetic mineral libethenite Cu2PO4OH was prepared by the hydrothermal method, and its structure at 200 K was refined by single-crystal X-ray diffraction. The structure of Cu2PO 4OH is built up from Cu22O6(OH)2 dimers of edge-sharing Cu2O4(OH) trigonal bipyramids and [Cu1 2O6(OH)2]∝ chains of edge-sharing Cu1O4(OH)2 octahedra. Magnetic properties of Cu2PO4OH were investigated by magnetic susceptibility, magnetization, and specific heat measurements. Cu2PO4OH is a spin-gap system with a spin gap of about 139 K. It was shown by spin dimer analysis that, to a first approximation, the magnetic structure of Cu 2PO4OH is described by an isolated square-spin cluster model defined by the Cu1-O-Cu2 superexchange J with Cu1⋯Cu2 = 3.429 Å. The fitting analysis of the magnetic susceptibility data with a square-spin cluster model results in J/kB = 138 K. Specific heat data show that Cu2PO4OH does not undergo a long-range magnetic ordering down to 1.8 K. We also report vibrational properties studied with Raman spectroscopy and the thermal stability of Cu2PO4OH.

AB - Synthetic mineral libethenite Cu2PO4OH was prepared by the hydrothermal method, and its structure at 200 K was refined by single-crystal X-ray diffraction. The structure of Cu2PO 4OH is built up from Cu22O6(OH)2 dimers of edge-sharing Cu2O4(OH) trigonal bipyramids and [Cu1 2O6(OH)2]∝ chains of edge-sharing Cu1O4(OH)2 octahedra. Magnetic properties of Cu2PO4OH were investigated by magnetic susceptibility, magnetization, and specific heat measurements. Cu2PO4OH is a spin-gap system with a spin gap of about 139 K. It was shown by spin dimer analysis that, to a first approximation, the magnetic structure of Cu 2PO4OH is described by an isolated square-spin cluster model defined by the Cu1-O-Cu2 superexchange J with Cu1⋯Cu2 = 3.429 Å. The fitting analysis of the magnetic susceptibility data with a square-spin cluster model results in J/kB = 138 K. Specific heat data show that Cu2PO4OH does not undergo a long-range magnetic ordering down to 1.8 K. We also report vibrational properties studied with Raman spectroscopy and the thermal stability of Cu2PO4OH.

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Magnetic properties of synthetic libethenite Cu₂PO ₄OH: A new spin-gap system

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