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'Enhancement of the crystallization process of TbxFe1-x thin films upon the formation of alpha-Tb phase'
Ranchal Sánchez, Raquel and López, E. and Prieto Martin, Jose Luis and Aroca Hernández-Ros, Claudio
'Enhancement of the crystallization process of TbxFe1-x thin films upon the formation of alpha-Tb phase'.
"Acta Materialia", v. 59
TbxFe1−x thin films deposited by sputtering on Mo were investigated structurally and magnetically. The microstructure consists of TbFe2 nanoparticles embedded in an amorphous matrix, and the Tb content can be correlated with an increase in the volume of these nanoparticles. Similar microstructure and behavior were found when TbFe2 was deposited on glass and on a Pt buffer layer. Nevertheless, thermal treatments promote a different effect, depending on the mechanical stiffness of the buffer layer. The layers deposited on Mo, a rigid material, show crystalline TbFe2 together with α-Tb phase upon thermal treatment. In contrast, TbFe2 does not crystallize properly on Pt, a material with a lower stiffness than Mo. Intermediate results were observed on the film deposited on glass. Experimental results show the impact of the buffer stiffness on the crystallization process. Moreover, the formation of α-Tb appears to be fundamental to crystallized TbFe2 on layers deposited on rigid buffers
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