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Rapid constructing magnetic phase diagrams by magneto-optical imaging of composition spread films

Published online by Cambridge University Press:  03 March 2011

M.J. Turchinskaya ,
L.A Bendersky ,
A.J. Shapiro ,
K.S. Chang ,
I. Takeuchi  and
A.L. Roytburd
M.J. Turchinskaya
Affiliation:
Metallurgy Division, Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
L.A Bendersky*
Affiliation:
Metallurgy Division, Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
A.J. Shapiro
Affiliation:
Metallurgy Division, Materials Science and Engineering Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
K.S. Chang
Affiliation:
Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742
I. Takeuchi
Affiliation:
Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742
A.L. Roytburd
Affiliation:
Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742
*
a) Address all correspondence to this author. e-mail: leoben@nist.gov
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Abstract

In this paper we present a new method of the rapid construction of magnetic phase diagrams in a temperature-composition space, using magneto-optic imaging with an indicator film technique (MOIF). The method is applied for mapping the diagram for the La1–xCaxMnO3 colossal magneto-resistive oxide, using the spread films deposited on a SrTiO3 substrate. The constructed magnetic diagram is in a good agreement with data on uniform films and bulk crystals of this system. The MOIF study of transitions under cooling and heating has revealed the formation of a non-magnetic phase in the area of temperatures from 5 K to 57 K and compositions from x = 0 to x = 0.5.

Keywords

Combinatorial synthesisDeposition (PLD)Magnetic properties
Type
Rapid Communications
Information
Journal of Materials Research , Volume 19 , Issue 9 , September 2004 , pp. 2546 - 2548
Copyright
Copyright © Materials Research Society 2004

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References

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