Unusual room temperature ferromagnetism in bulk sintered GaP doped with copper

Frank J. Owens; Amita Gupta; K. V. Rao; Zafar Iqbal; J. M.Osorio Guillen; R. Ahuja; J. H. Guo

doi:10.1109/TMAG.2007.893998

Unusual room temperature ferromagnetism in bulk sintered GaP doped with copper

Frank J. Owens, Amita Gupta, K. V. Rao, Zafar Iqbal, J. M.Osorio Guillen, R. Ahuja, J. H. Guo

Chemistry and Environmental Science

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

6 Scopus citations

Abstract

Robust room temperature ferromagnetism is obtained in single phase Gallium Phosphide doped with Cu2+ prepared by simple solid state reaction route. The saturation magnetization at 300 K is 1.5 × 10^-2 emu/g and the coercivity was found to be 125 Oe. A strong ferromagnetic resonance signal confirms the long range magnetic order which persists to temperatures as high as 739 K. X-ray absorption spectroscopy (XAS) indicate that Cu is in a +2 state. Ab initio calculations also show that the ferromagnetic ordering is energetically favorable in Cu doped GaP. When the spin-orbit coupling is included we get an enhanced total magnetic moment of 0.31 μ_B with a local moment on Cu 0.082 and on P 0.204 μ_B per atom.

Original language	English (US)
Pages (from-to)	3043-3045
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	43
Issue number	6
DOIs	https://doi.org/10.1109/TMAG.2007.893998
State	Published - Jun 2007

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Keywords

GaP:Cu
Magnetic resonance
Magnetic semiconductors
Materials science and technology
Spintronics

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10.1109/TMAG.2007.893998

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title = "Unusual room temperature ferromagnetism in bulk sintered GaP doped with copper",

abstract = "Robust room temperature ferromagnetism is obtained in single phase Gallium Phosphide doped with Cu2+ prepared by simple solid state reaction route. The saturation magnetization at 300 K is 1.5 × 10-2 emu/g and the coercivity was found to be 125 Oe. A strong ferromagnetic resonance signal confirms the long range magnetic order which persists to temperatures as high as 739 K. X-ray absorption spectroscopy (XAS) indicate that Cu is in a +2 state. Ab initio calculations also show that the ferromagnetic ordering is energetically favorable in Cu doped GaP. When the spin-orbit coupling is included we get an enhanced total magnetic moment of 0.31 μB with a local moment on Cu 0.082 and on P 0.204 μB per atom.",

keywords = "GaP:Cu, Magnetic resonance, Magnetic semiconductors, Materials science and technology, Spintronics",

author = "Owens, {Frank J.} and Amita Gupta and Rao, {K. V.} and Zafar Iqbal and Guillen, {J. M.Osorio} and R. Ahuja and Guo, {J. H.}",

note = "Funding Information: ACKNOWLEDGMENT This work is supported by Swedish Agencies VINNOVA, the SSF program on ATOMICS and EXCITING and the EU-network. Part of the theoretical calculations were carried out at National Supercomputer Center (NSC), Link{\"o}ping, Sweden.",

year = "2007",

month = jun,

doi = "10.1109/TMAG.2007.893998",

language = "English (US)",

volume = "43",

pages = "3043--3045",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "6",

}

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T1 - Unusual room temperature ferromagnetism in bulk sintered GaP doped with copper

AU - Owens, Frank J.

AU - Gupta, Amita

AU - Rao, K. V.

AU - Iqbal, Zafar

AU - Guillen, J. M.Osorio

AU - Ahuja, R.

AU - Guo, J. H.

N1 - Funding Information: ACKNOWLEDGMENT This work is supported by Swedish Agencies VINNOVA, the SSF program on ATOMICS and EXCITING and the EU-network. Part of the theoretical calculations were carried out at National Supercomputer Center (NSC), Linköping, Sweden.

PY - 2007/6

Y1 - 2007/6

N2 - Robust room temperature ferromagnetism is obtained in single phase Gallium Phosphide doped with Cu2+ prepared by simple solid state reaction route. The saturation magnetization at 300 K is 1.5 × 10-2 emu/g and the coercivity was found to be 125 Oe. A strong ferromagnetic resonance signal confirms the long range magnetic order which persists to temperatures as high as 739 K. X-ray absorption spectroscopy (XAS) indicate that Cu is in a +2 state. Ab initio calculations also show that the ferromagnetic ordering is energetically favorable in Cu doped GaP. When the spin-orbit coupling is included we get an enhanced total magnetic moment of 0.31 μB with a local moment on Cu 0.082 and on P 0.204 μB per atom.

AB - Robust room temperature ferromagnetism is obtained in single phase Gallium Phosphide doped with Cu2+ prepared by simple solid state reaction route. The saturation magnetization at 300 K is 1.5 × 10-2 emu/g and the coercivity was found to be 125 Oe. A strong ferromagnetic resonance signal confirms the long range magnetic order which persists to temperatures as high as 739 K. X-ray absorption spectroscopy (XAS) indicate that Cu is in a +2 state. Ab initio calculations also show that the ferromagnetic ordering is energetically favorable in Cu doped GaP. When the spin-orbit coupling is included we get an enhanced total magnetic moment of 0.31 μB with a local moment on Cu 0.082 and on P 0.204 μB per atom.

KW - GaP:Cu

KW - Magnetic resonance

KW - Magnetic semiconductors

KW - Materials science and technology

KW - Spintronics

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DO - 10.1109/TMAG.2007.893998

M3 - Article

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SN - 0018-9464

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SP - 3043

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

IS - 6

ER -

Unusual room temperature ferromagnetism in bulk sintered GaP doped with copper

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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