Shape Dependence of Low-Temperature Magnetic Relaxation of Mn<SUB>12</SUB>Ac

Chin. Phys. Lett.

2008, Vol. 25

Issue (7): 2631-2633 DOI:

Original Articles

Shape Dependence of Low-Temperature Magnetic Relaxation of Mn₁₂Ac

LIU Hai-Qing, SU Shao-Kui, JING Xiu-nian, LIU Ying, LI Yan-rong, HE Lun-Hua, GE Pei-Wen, YAN Qi-Wei, WANG Yun-Ping

Beijing National Laboratory of Condensed matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190

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LIU Hai-Qing, SU Shao-Kui, JING Xiu-nian et al 2008 Chin. Phys. Lett. 25 2631-2633

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Abstract We report the discovery that the low-temperature magnetic relaxation in Mn₁₂Ac single crystals strongly depends on the shape of the samples. The relaxation time exhibits a minimum at the phase transition point between ferromagnetic and antiferromagnetic phases. The shape dependence is attributed to the dipolar interaction between molecular magnets.

Keywords: 73.40.Gk 75.30.Gw 75.40.-s 75.60.Ej

Received: 30 May 2008 Published: 26 June 2008

PACS:	73.40.Gk	(Tunneling)
	75.30.Gw	(Magnetic anisotropy)
	75.40.-s	(Critical-point effects, specific heats, short-range order)
	75.60.Ej	(Magnetization curves, hysteresis, Barkhausen and related effects)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2008/V25/I7/02631

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	LIU Hai-Qing
	SU Shao-Kui
	JING Xiu-nian
	LIU Ying
	LI Yan-rong
	HE Lun-Hua
	GE Pei-Wen
	YAN Qi-Wei
	WANG Yun-Ping

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