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Structure and magnetism of manganese-doped ZnO powder samples

โœ Scribed by S. A. Ahmed

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
127 KB
Volume
44
Category
Article
ISSN
0232-1300

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โœฆ Synopsis

Abstract

The magnetic and structural properties of manganeseโ€doped ZnO powder samples prepared by a solid state method are reported. Magnetization measurements indicate ferromagnetic behavior, with hysteresis observed in the M vs. H behavior at 300 K. Coercive fields were <100 Oe at 300 K. Temperatureโ€dependent magnetization measurements showed evidence for ordering temperatures of >300 K. However, the results show that ferromagnetism originates from the doped matrix rather than any type of magnetic cluster and the ferromagnetism is due to the defects and/or oxygen vacancies confined to the surface of the grains. (ยฉ 2009 WILEYโ€VCH Verlag GmbH & Co. KGaA, Weinheim)

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