Room-Temperature Ferromagnetism in Zn <SUB>1-x</SUB> Mn<SUB>x</SUB>O Thin Films Deposited by Pulsed Laser Deposition

Chin. Phys. Lett.

2007, Vol. 24

Issue (4): 1073-1075 DOI:

Original Articles

Room-Temperature Ferromagnetism in Zn _1-x Mn_xO Thin Films Deposited by Pulsed Laser Deposition

TENG Xiao-Yun ^1,2;YU Wei ²;YANG Li-Hua ²;HAO Qiu-Yan ¹;ZHANG Li²,
XU He-Ju²;LIU Cai-Chi¹;FU Guang-Sheng²

¹School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130²College of Physics Science and Technology, Hebei University, Baoding 071002

Cite this article:

TENG Xiao-Yun, YU Wei, YANG Li-Hua et al 2007 Chin. Phys. Lett. 24 1073-1075

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Abstract Zn_1-x Mn_xO (x=0.01--0.1) thin films with a Curie temperature above 300K are deposited on Al₂O₃ (0001) substrates by pulsed laser deposition. X-ray diffraction (XRD), ultraviolet (UV)-visible transmission and Raman spectroscopy are employed to characterize the microstructural properties of these films.
Room temperature ferromagnetism is observed by superconducting quantum
interference device (SQUID). The results indicate that Mn doping introduces the incorporation of Mn²⁺ ions into the ZnO host matrix and the insertion of Mn²⁺ ions increases the lattice defects, which is correlated with the ferromagnetism of the obtained films. The doping concentration is also proven to be a crucial factor for obtaining highly ferromagnetic Zn_1-x Mn_xO films.

Keywords: 75.50.Dd 75.50.Pp 75.60.Ej

Received: 07 December 2006 Published: 26 March 2007

PACS:	75.50.Dd	(Nonmetallic ferromagnetic materials)
	75.50.Pp	(Magnetic semiconductors)
	75.60.Ej	(Magnetization curves, hysteresis, Barkhausen and related effects)

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	TENG Xiao-Yun
	YU Wei
	YANG Li-Hua
	HAO Qiu-Yan
	ZHANG Li
	XU He-Ju
	LIU Cai-Chi
	FU Guang-Sheng

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