Enhanced Ferromagnetism in Zn0.99Fe0.01O Modified by High Pressure

Yong Qiang Wang; Xue Rui Cheng; Lei Su; Jun Hong Hao

doi:10.4028/www.scientific.net/AMR.560-561.989

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 560-561Enhanced Ferromagnetism in Zn0.99Fe0.01O Modified...

Enhanced Ferromagnetism in Zn_0.99Fe_0.01O Modified by High Pressure

Abstract:

Polycrystalline bulk sample Zn_0.99Fe_0.01O was fabricated by a solid-state reaction method and modified by high-pressure treatment technique at a pressure of 5GPa. The structure, morphology and magnetic properties of these samples were investigated in order to clarify the effect of pressure on magnetism of Zn-Fe-O system. It is found that the particle size of the modified samples becomes larger as well as the physical contact between neighboring particles becomes better. All samples show obvious ferromagnetic behaviors at room temperature, and the magnetization of modified samples greatly increases. It is believed that the larger particle size and the closer contact between neighbouring particles resulted from high-pressure treatment cause stronger ferromagnetic exchange interaction in Zn-Fe-O system.

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Advanced Materials Research (Volumes 560-561)

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989-993

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https://doi.org/10.4028/www.scientific.net/AMR.560-561.989

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August 2012

Authors:

Yong Qiang Wang, Xue Rui Cheng, Lei Su, Jun Hong Hao

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Diluted Magnetic Semiconductor (DMS), Ferromagnetism, High-Pressure

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