B2+L2{sub 1} ordering in Co{sub 2}MnAl Heusler alloy

Magnetic and structural properties of B2 ordered Co{sub 2}MnAl Heusler alloy have been studied by X-ray diffraction and DC magnetization techniques. X-ray diffractogram shows the structure is of B2 type with preferential site disorder between Mn and Al atoms and presence of a small L2{sub 1} phase....

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Bibliographic Details
Published in:AIP conference proceedings 2014-04, Vol.1591 (1)
Main Authors: Vinesh, A., Sudheesh, V. D., Lakshmi, N., Venugopalan, K.
Format: Article
Language:English
Subjects:
ANTIFERROMAGNETISM
COUPLING
CURIE POINT
HEUSLER ALLOYS
MAGNETIZATION
MATERIALS SCIENCE
X-RAY DIFFRACTION
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Summary:Magnetic and structural properties of B2 ordered Co{sub 2}MnAl Heusler alloy have been studied by X-ray diffraction and DC magnetization techniques. X-ray diffractogram shows the structure is of B2 type with preferential site disorder between Mn and Al atoms and presence of a small L2{sub 1} phase. DC magnetization studies at low temperature establish that the antiferromagnetic nature arises mainly due to the antiparallel coupling of spin moments of 3d electrons of Co with Mn atoms. Curie temperature (T{sub c}) is 733 K which is close to T{sub c} of the L2{sub 1} phase.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4873018