Unusual room temperature ferromagnetism in bulk sintered GaP doped with copper

Document Type

Article

Publication Date

1-1-2007

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. © 2007 IEEE.

Identifier

34249094296 (Scopus)

Publication Title

IEEE Transactions on Magnetics

External Full Text Location

https://doi.org/10.1109/TMAG.2007.893998

ISSN

00189464

First Page

3043

Last Page

3045

Issue

6

Volume

43

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