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",

}

TY - JOUR

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

UR - https://www.scopus.com/pages/publications/34249094296

UR - https://www.scopus.com/pages/publications/34249094296#tab=citedBy

U2 - 10.1109/TMAG.2007.893998

DO - 10.1109/TMAG.2007.893998

M3 - Article

AN - SCOPUS:34249094296

SN - 0018-9464

VL - 43

SP - 3043

EP - 3045

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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