Epitaxial-tau(Mn,Ni)Al/(Al,Ga)As heterostructures: Magnetic and magneto-optic properties

Cheeks, T. L. and Brasil, M. J. S. P. and De Boeck, Jo and Harbison, J. P. and Sands, T. and Tanaka, M. and Scherer, A. and Keramidas, V. G. (1993) Epitaxial-tau(Mn,Ni)Al/(Al,Ga)As heterostructures: Magnetic and magneto-optic properties. Journal of Applied Physics, 73 (10). pp. 6121-6123. ISSN 0021-8979 http://resolver.caltech.edu/CaltechAUTHORS:CHEjap93

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Abstract

Ferromagnetic Perpendicularly magnetized epitaxial thin films of tau (Mn,Ni)AI have been successfully grown on AlAs/GaAs heterostructures by molecular beam epitaxy. We have investigated the polar Kerr rotation and magnetization of tau MnAl and (Mn,Ni) Al as a function of Mn and Ni concentration. The largest polar Kerr rotation and remnant magnetization were obtained for Mn0.5Al0.5 thin films with values of 0.16-degrees and 224 emu/cm3, respectively. We observed that the Kerr rotation and magnetization remained constant with Ni additions up to about 12 at. % and subsequently decreased with further Ni additions. We discuss these results and one possible method of enhancing the Kerr rotation.

Item Type:	Article
Additional Information:	Copyright © 1993 American Institute of Physics.
Subject Keywords:	HETEROSTRUCTURES; TERNARY COMPOUNDS; MANGANESE COMPOUNDS; NICKEL COMPOUNDS; ALUMINIUM COMPOUNDS; GALLIUM ARSENIDES; MOLECULAR BEAM EPITAXY; FERROMAGNETIC MATERIALS; MAGNETO–OPTICAL EFFECTS; MAGNETIZATION
Record Number:	CaltechAUTHORS:CHEjap93
Persistent URL:	http://resolver.caltech.edu/CaltechAUTHORS:CHEjap93
Alternative URL:	http://dx.doi.org/10.1063/1.352721
Usage Policy:	No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:	3817
Collection:	CaltechAUTHORS
Deposited By:	Tony Diaz
Deposited On:	12 Jul 2006
Last Modified:	26 Dec 2012 08:56

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