The effect of a ferromagnetic Gd marker layer on the effective work function (WFeffFe) of Fe in a Fe/Gd/Al2O3/Si stack has been systematically investigated by hard X-ray photoelectron spectroscopy (HAXPES) and capacitance-voltage measurements. A pronounced change in the band alignment at the buried Fe/Al2O3 interface WFeffFe - 4.5/3.7 eV is revealed by HAXPES as a function of the Gd marker thickness in the range 0/2.7 nm, in agreement with capacitance-voltage (C-V) data. Interface-sensitive 57 Fe conversion-electron Mossbauer spectroscopy performed on Fe/Gd/Al2O3/Si stacks reveals major structural and magnetic changes at the Fe/Gd interface for different Gd thickness, which are correlated with the changes of the Fe/Al2O3 band alignment. (C) 2012 American Institute of Physics. [doi:10.1063/1.3672398]
Zenkevich, A., Matveyev, Y., Lebedinskii, Y., Mantovan, R., Fanciulli, M., Thiess, S., et al. (2012). The effect of a ferromagnetic Gd marker on the effective work function of Fe in contact with Al2O3/Si. JOURNAL OF APPLIED PHYSICS, 111(7) [10.1063/1.3672398].
The effect of a ferromagnetic Gd marker on the effective work function of Fe in contact with Al2O3/Si
FANCIULLI, MARCO;
2012
Abstract
The effect of a ferromagnetic Gd marker layer on the effective work function (WFeffFe) of Fe in a Fe/Gd/Al2O3/Si stack has been systematically investigated by hard X-ray photoelectron spectroscopy (HAXPES) and capacitance-voltage measurements. A pronounced change in the band alignment at the buried Fe/Al2O3 interface WFeffFe - 4.5/3.7 eV is revealed by HAXPES as a function of the Gd marker thickness in the range 0/2.7 nm, in agreement with capacitance-voltage (C-V) data. Interface-sensitive 57 Fe conversion-electron Mossbauer spectroscopy performed on Fe/Gd/Al2O3/Si stacks reveals major structural and magnetic changes at the Fe/Gd interface for different Gd thickness, which are correlated with the changes of the Fe/Al2O3 band alignment. (C) 2012 American Institute of Physics. [doi:10.1063/1.3672398]I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.