Evidence of defect-induced ferromagnetism in ZnFe2O4 thin films

Article

关键词: MAGNETIC-PROPERTIES;    ZINC FERRITE;   

DOI  :  10.1103/PhysRevB.84.064404

来源: SCIE

【 摘 要 】

X-ray absorption near-edge and grazing incidence x-ray fluorescence spectroscopy are employed to investigate the electronic structure of ZnFe2O4 thin films. The spectroscopy techniques are used to determine the nonequilibrium cation site occupancy as a function of depth and oxygen pressure during deposition and its effects on the magnetic properties. It is found that low deposition pressures below 10(-3) mbar cause iron superoccupation of tetrahedral sites without Zn2+ inversion, resulting in an ordered magnetic phase with high room-temperature magnetic moment.

【 授权许可】

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