Kulkarni , Gururaj Anand and Murthy, Oruganty V. S. N. and Rao, K. S. R. K. and Bhat, S. V. and Chakraborty , B. R. (2010) Coexistence of para and ferromagnetic phases of Fe3+ in undoped CdZnTe (Zn r-v 4%) crystals. Solid State Communications, 150 (43-44). pp. 2174-2177. ISSN 0038-1098

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Abstract

The signatures of the coexistence of para and ferromagnetic phases for the Fe3+ charge state of iron have been identified in the low temperature electron spin resonance (ESR) spectra in undoped CdZnTe (Zn ~ 4%) crystals and independently verified by superconducting quantum interference device (SQUID)and AC susceptibility measurements. In the paramagnetic phase the inverse of AC susceptibility follows the Curie-Weiss law. In the ferromagnetic phase the thermal evolution of magnetization follows the well-known Bloch T3/2 law. This is further supported by the appearance of hysteresis in the SQUID measurements at 2 Kbelow Tc which is expected to lie in between 2 and 2.5 K.

Item Type:	Article
Subjects:	Physics
Divisions:	UNSPECIFIED
Depositing User:	Ms Neetu Chandra
Date Deposited:	27 Feb 2012 11:39
Last Modified:	26 Mar 2012 07:10
URI:	http://npl.csircentral.net/id/eprint/45

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