Improved properties of epitaxial YNixMn1-xO3 films by annealing under high magnetic fields

Details Improved properties of epitaxial YNixMn1-xO3 films by annealing under high magnetic fields Improved properties of epitaxial YNixMn1-xO3 films by annealing under high magnetic fields

2006-10-11

arxiv.org/abs/cond-mat/0610285v1

Appl. Phys. Lett. 89, 152505 (2006)

Physics

Condensed Matter

Materials Science

15 pages, 4 figures

Scientific paper

10.1063/1.2359290

The effect of annealing under a magnetic field on the microstructure and properties of YNixMn1-xO3 (x=0.33 and 0.5) films has been investigated. It is found that the ferromagnetic transition temperature is significantly enhanced after post annealing in the presence of an 8 T magnetic field. Characterization study shows that the microstructure is affected, obtaining larger grains of uniform size when films are annealed under a magnetic field. The improvement in the ordering temperature of all films is interpreted in terms of the grain growth caused by the magnetic-field driving force for boundary motion where the exchange coupling is high.

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