Kulkarni, Gururaj Anand and Murthy, Oruganty VSN and Rao, KSRK and Bhat, SV and Chakraborty, BR (2010) Coexistence of para and ferromagnetic phases of Fe3+ in undoped CdZnTe (Zn similar to 4%) crystals. In: Solid State Communications, 150 (43-44). pp. 2174-2177.
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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 similar to 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 T-3/2 law. This is further supported by the appearance of hysteresis in the SQUID measurements at 2 K below T-c which is expected to lie in between 2 and 2.5 K. (C) 2010 Elsevier Ltd. All rights reserved.
|Item Type:||Journal Article|
|Additional Information:||Copyright of this article belongs to Elsevier Science.|
|Keywords:||Semiconductors; Impurities in semiconductors; Phase transitions; Electron paramagnetic resonance|
|Department/Centre:||Division of Physical & Mathematical Sciences > Physics|
|Date Deposited:||08 Dec 2010 11:10|
|Last Modified:||08 Dec 2010 11:10|
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