Spin hall magnetoresistance in CoFe2O4/Pt films

Author

Wu, H. ; Zhang, Q. ; Wan, C. ; Ali, S. ; You, L. ; Wang, J. ; Choi, Y. ; Han, X.

Author_Institution

State Key Lab. of Magn., Inst. of Phys., Beijing, China

fYear

2015

fDate

11-15 May 2015

Firstpage

1

Lastpage

1

Abstract

This study aims to measure the spin Hall magnetoresistance combined with ordinary magnetoresistance of CoFe₂O₄/Pt films at room temperature. The CoFe₂O₄ thin film is produced by pulsed laser deposition and magnetron sputtering on MgO(001) substrate. X-ray absorption spectra and magnetic circular dichroism are used for characterization. Cross-section TEM confirmed that the CoFe₂O₄ film crystal epitaxially grew along the (001) direction, and field dependence of magnetization and transport measurement confirmed its ferrimagnetism and insulation. Results demonstrate the universality of spin Hall magnetoresistance effect and the utility in spintronics of CoFe₂O₄ as a new type of magnetic insulator.

Keywords

X-ray absorption spectra; cobalt compounds; ferrimagnetic materials; insulating thin films; interface magnetism; magnetic circular dichroism; magnetic thin films; magnetisation; magnetoelectronics; magnetoresistance; metal-insulator boundaries; platinum; pulsed laser deposition; spin Hall effect; sputter deposition; transmission electron microscopy; CoFe₂O₄-Pt; MgO; X-ray absorption spectra; cross-section TEM; ferrimagnetism; magnetic circular dichroism; magnetic insulator; magnetization; magnetron sputtering; pulsed laser deposition; spin Hall magnetoresistance; spintronics; temperature 293 K to 298 K; thin film; transport measurement; Films; Hall effect; Magnetic hysteresis; Magnetization; Magnetoresistance; Perpendicular magnetic anisotropy;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference (INTERMAG), 2015 IEEE

Conference_Location

Beijing

Print_ISBN

978-1-4799-7321-7

Type

conf

DOI

10.1109/INTMAG.2015.7157176

Filename

7157176