Interfaces between antiferromagnetic CoO and ferromagnetic Fe are typically characterized by the development of Fe oxides. Recently, it was shown that the use of a proper ultra-thin Co buffer layer prevents the formation of Fe oxides [Brambilla et al., Appl. Surf. Sci. 362, 374 (2016)]. In the present work, we investigate the magnetic properties of such an interface, and we find evidence for an in-plane uniaxial magnetic anisotropy, which is characterized by a multijump reversal behavior in the magnetization hysteresis loops. X-ray photoemission spectroscopy and element-sensitive hysteresis loops reveal that the occurrence of such an anisotropy is a phenomenon developing at the very interface.

Magnetic anisotropy at the buried CoO/Fe interface

GIANNOTTI, DARIO;HEDAYAT ZADEH ROODSARI, HAMOON;PICONE, ANDREA;CALLONI, ALBERTO;BERTI, GIULIA;RIVA, MICHELE;BUSSETTI, GIANLORENZO;BOSCHINI, FABIO;PANACCIONE, GIANCARLO;CARPENE, ETTORE;DALLERA, CLAUDIA;FINAZZI, MARCO;BRAMBILLA, ALBERTO
2016

Abstract

Interfaces between antiferromagnetic CoO and ferromagnetic Fe are typically characterized by the development of Fe oxides. Recently, it was shown that the use of a proper ultra-thin Co buffer layer prevents the formation of Fe oxides [Brambilla et al., Appl. Surf. Sci. 362, 374 (2016)]. In the present work, we investigate the magnetic properties of such an interface, and we find evidence for an in-plane uniaxial magnetic anisotropy, which is characterized by a multijump reversal behavior in the magnetization hysteresis loops. X-ray photoemission spectroscopy and element-sensitive hysteresis loops reveal that the occurrence of such an anisotropy is a phenomenon developing at the very interface.
Physics and Astronomy (miscellaneous)
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/1006969
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