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Photoinduced Heating and Phase Transition in CMR Materials

Published online by Cambridge University Press:  17 March 2011

N. Noginova ,
E. Arthur ,
R. Ulysse ,
E. S. Gillman  and
C. E. Bonner
N. Noginova
Affiliation:
Center for Materials Research, Norfolk State University, Norfolk, VA 23504
E. Arthur
Affiliation:
Center for Materials Research, Norfolk State University, Norfolk, VA 23504
R. Ulysse
Affiliation:
Center for Materials Research, Norfolk State University, Norfolk, VA 23504
E. S. Gillman
Affiliation:
Center for Materials Research, Norfolk State University, Norfolk, VA 23504
C. E. Bonner
Affiliation:
Center for Materials Research, Norfolk State University, Norfolk, VA 23504
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Abstract

Fast switching from conductor to insulator induced by laser light illumination has been studied in single crystals and thin films of La1−xSrxMnO3 in the range of the ferromagnetic phase transition. Based on our experimental data on the photoresponse as a function of temperature, electric current, and intensity, we have demonstrated that the switching and relaxation processes are determined by heating and heat conduction processes. The relaxation time, specific heat and the latent heat constants have been estimated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 690: Symposium F – Spintronics , 2001 , F3.7
Copyright
Copyright © Materials Research Society 2002

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References

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