Magnetic properties of Er,O‐codoped GaAs at low temperature

S Takemoto,H Ohta,Y Fujiwara,T Terao,Y Terai,M Yoshida,A Koizumi,Y Takeda,N Fujimura

doi:10.1002/pssc.200672878

Magnetic properties of Er,O‐codoped GaAs at low temperature

S Takemoto, H Ohta + Show 7 more

https://doi.org/10.1002/pssc.200672878

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Journal: physica status solidi (c)

Publication Date: Dec 1, 2006

Affiliation: Osaka University, Kobe University, Osaka Prefecture University, Nagoya University

#Magnetic Properties Of Er #Superconducting Quantum Interference Devices + Show 8 more

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Abstract

Magnetic properties of Er-doped GaAs (GaAs:Er) and Er,O-codoped GaAs (GaAs:Er,O) have been investigated by using superconducting quantum interference devices (SQUID) magnetometer at low temperature. In M-H curves of GaAs:Er,O, a characteristic magnetization due to the codoping with Er and O was observed at 2 K, while GaAs:Er exhibited much smaller magnetization. The saturation magnetization of GaAs:Er,O slightly increased with Er concentration. These results were discussed in relation to an atomic configuration formed selectively around Er3+ ions in GaAs:Er,O. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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