Coexistence of para and ferromagnetic phases of in undoped CdZnTe () crystals

The signatures of the coexistence of para and ferromagnetic phases for the Fe super(3+) charge state of iron have been identified in the low temperature electron spin resonance (ESR) spectra in undoped CdZnTe () crystals and independently verified by superconducting quantum interference device (SQUI...

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Bibliographic Details
Published inSolid state communications Vol. 150; no. 43-44; pp. 2174 - 2177
Main Authors Kulkarni, Gururaj Anand, Murthy, Oruganty V.S.N., Rao, K.S.R.K., Bhat, S.V., Chakraborty, B.R.
Format Journal Article
LanguageEnglish
Published 01.11.2010
Subjects
Cadmium zinc tellurides
Crystals
Ferromagnetic phases
Magnetization
Signatures
SQUIDs
Superconducting quantum interference devices
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Summary:The signatures of the coexistence of para and ferromagnetic phases for the Fe super(3+) charge state of iron have been identified in the low temperature electron spin resonance (ESR) spectra in undoped CdZnTe () 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 super(3/2) law. This is further supported by the appearance of hysteresis in the SQUID measurements at 2 K below T sub()Cwhich is expected to lie in between 2 and 2.5 K.
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ISSN:0038-1098
DOI:10.1016/j.ssc.2010.09.002