Influence of the Magnetic Anisotropy Dispersion in Ge3Mn5 Clusters on the Temperature Dependences of Magnetization in Thin Ge:Mn Films

The temperature dependences of magnetization M ( T ) of thin ion-implanted Ge:Mn (4 at % Mn) films containing Ge 3 Mn 5 clusters were measured on samples cooled in the absence of magnetic field (zero field cooled, ZFC) and in a magnetic field of 10 kOe (field-cooled, FC). It has been established tha...

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Bibliographic Details
Published in:Technical physics letters 2019, Vol.45 (1), p.34-36
Main Authors: Dmitriev, A. I., Dmitrieva, M. S., Ziborov, G. G.
Format: Article
Language:English
Subjects:
Anisotropy
Classical and Continuum Physics
Cluster analysis
Dispersion
Magnetic anisotropy
Magnetic fields
Magnetism
Magnetization
Magnetization curves
Physics
Physics and Astronomy
Thin films
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Summary:The temperature dependences of magnetization M ( T ) of thin ion-implanted Ge:Mn (4 at % Mn) films containing Ge 3 Mn 5 clusters were measured on samples cooled in the absence of magnetic field (zero field cooled, ZFC) and in a magnetic field of 10 kOe (field-cooled, FC). It has been established that the shape of ZFC–FC differential M ( T ) curves is determined by lognormal distribution of the size-dependent magnetic anisotropy energy of Ge 3 Mn 5 clusters. Analysis of the observed ZFC–FC magnetization curves allowed the magnetic anisotropy dispersion (variance) and magnetic anisotropy constant to be estimated.
ISSN:1063-7850
1090-6533
DOI:10.1134/S106378501901022X