Publication: Evolution of the structural and magnetic properties of sputtered Tb_xFe_(73)Ga_(27-x) (7 at.% ≤ x ≤ 11 at.%) thin films upon the increase of Tb content
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2016-05-15
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Elsevier Science SA
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Abstract
TbxFe_(73)Ga_(27-x) (7 at.% ≤ x ≤ 11 at.%) ternary alloys have been obtained by cosputtering from Tb_(33)Fe_(67) and Fe_(72)Ga_(28) targets. In contrast with other Tb-Fe-Ga compounds that consist of just one structural phase, the diffraction pattern of the Tb_7Fe_(73)Ga_(20) shows the presence of two different phases related to binary Tb-Fe and Fe-Ga alloys. This microstructure evolves as the Tb content is increased, and for a Tb of 11 at.% x-ray diffractometry only evidences the presence of a phase close to the TbFe_2. Although none of the studied samples show perpendicular magnetic anisotropy, there is a significant component of the magnetization perpendicular to the sample plane. The increase of the Tb content on the compounds from 7 at.% to 11 at.% enhances this component most probably due to the shift of the microstructure towards one similar to the TbFe_2.
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© Elsevier Science SA.
We thank ‘CAI Difracción de rayos-X’ of UCM for the x-ray diffractometry measurements. This work has been financially supported through the projects PRIN 2010ECA8P3 ‘DyNanoMag’ and FIRB2010 RBFR10E61T ‘NANOREST’ of the Italian Ministry of Education, University and Research and project of the Universidad Complutense de Madrid ‘Ayudas para Grupos de Investigación GR3/14’.