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The Magentic Susceptibility in Ultrathin Films of Magnetic Materials

Published online by Cambridge University Press:  10 February 2011

Kamakhya P. Ghatak ,
P. K. Bose  and
Gautam Majumder
Kamakhya P. Ghatak
Affiliation:
Department of Electronic Science, University of Calcutta, University College of Science and Technology, 92, Acharya Prafulla Chandra Road, Calcutta-700 009, INDIA.
P. K. Bose
Affiliation:
Department of Mechanical Engineering, Faculty of Engineering and Technology, Jadavpur University, Calcutta-700 032, INDIA.
Gautam Majumder
Affiliation:
Department of Mechanical Engineering, Faculty of Engineering and Technology, Jadavpur University, Calcutta-700 032, INDIA.
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Abstract

In this paper we have studied the dia and paramagentic susceptibilities of the holes in ultrathin films of magnetic materials in the presence of a parallel magentic field on the basis of a newly derived dispersion law for such systems. The numerical computations are performed taking Hg1-xMnx Te and Cd1-xMnx Se as examples. Both the susceptibilities increses with decreasing doping and film thickness respectively. It is important to note that not only the paramagnetic-to-diamagnetic susceptibility ratio for the present case deviates from (1/3) in conventional semiconductors, but also that is a critical region, where quenching of the diamagnetic occurs. The theoretical analysis is in agreement with the experimental datas as given elsewhere.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 494: Symposium V – Science & Technology of Magnetic Oxides , 1997 , 157
Copyright
Copyright © Materials Research Society 1998

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References

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