Abstract
A model calculation of magnetization and susceptibility of disordered alloy (A pB1 −p ) where bothA andB represent the magnetic atoms is presented. It is based on the cluster-variational method where interactions within the clusters of all possible configurations are treated exactly and the rest of the interaction is replaced by an effective variational field. The frustration effect is introduced taking the exchange interactionsJ AB orJ BB or both to be antiferromagnetic whereas the exchangeJ AA is ferromagnetic. The results are qualitatively similar to the observed behaviour of moment and susceptibility in some metallic glasses. The critical concentration for ferromagnetic state is determined in the presence of competitive interactions.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bhagat S M, Geohegan J A and Chen H S 1980Solid State Commun. 36 1
Bhagat H S 1981J. Appl. Phys. 52 1741
Crane S and Claus H 1980Solid State Commun. 35 461
Crane S and Claus H 1981Phys. Rev. Lett. 46 1693
Ghatak S 1978J. Phys. C11 1401
Handrich K 1969Phys. Status Solidi B32 K55
Jones R C and Yates G J 1975J. Phys. C8 1707
Kirkpatrick S and Sherrington D 1978Phys. Rev. B17 4384
Kleiman R N, Martensee I and Williams G 1982Phys. Rev. B26 5241
Manheimer M A, Bhagat S M and Chen H 1982Phys. Rev. B26 456
Oguchi A 1976Prog. Theor. Phys. 56 1442
Salamon M B, Rao K V and Yeshrun Y 1981J. Appl. Phys. 52 1687
Simpson A W and Brambley D R 1972Phys. Status Solidi B59 K119
Sherringten D and Kirkpatrick S 1975Phys. Rev. Lett. 35 1792
Yeshrun Y, Rao K V, Salamon M B and Chen H S 1981Solid State Commun. 38 371
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ghatak, S.K. Magnetization and susceptibility of disordered alloy with competitive interactions. Pramana - J. Phys 22, 421–429 (1984). https://doi.org/10.1007/BF02847108
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02847108