Exchange coupled composite FePt/TbCo/[Co/Ni]N films with an TbCo interlayer

Bin Ma; G. Y. Situ; H. G. Chu; J. P. Wang

doi:10.1063/1.4977501

Exchange coupled composite FePt/TbCo/[Co/Ni]_N films with an TbCo interlayer

Bin Ma, G. Y. Situ, H. G. Chu, J. P. Wang

Electrical and Computer Engineering

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1 Scopus citations

Abstract

The exchange coupled composite FePt/TbCo/[Co/Ni]_N films have been prepared by DC magnetron sputtering. The net magnetization of ferromagnetic TbCo changes with the temperature variation, and then the magnetic configuration of FePt/TbCo/[Co/Ni]_N changes. When a RE-dominated Tb₃₂Co₆₈ is inserted, FePt/Tb₃₂Co₆₈/[Co/Ni]₅ has high coercivity at room temperature because of its synthesis ferrimagnetic sandwich structure, but small coercivity is obtained when the temperature is higher than 200 °C because of its graded ECC structure.

Original language	English (US)
Article number	056508
Journal	AIP Advances
Volume	7
Issue number	5
DOIs	https://doi.org/10.1063/1.4977501
State	Published - May 1 2017

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© 2017 Author(s).

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AB - The exchange coupled composite FePt/TbCo/[Co/Ni]N films have been prepared by DC magnetron sputtering. The net magnetization of ferromagnetic TbCo changes with the temperature variation, and then the magnetic configuration of FePt/TbCo/[Co/Ni]N changes. When a RE-dominated Tb32Co68 is inserted, FePt/Tb32Co68/[Co/Ni]5 has high coercivity at room temperature because of its synthesis ferrimagnetic sandwich structure, but small coercivity is obtained when the temperature is higher than 200 °C because of its graded ECC structure.

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