Magnetic Properties of New Diluted Magnetic Semiconductors Pb1-X-YMgXYbYTe

Abstract:

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We have studied the magnetic susceptibility, magnetization and electron paramagnetic resonance (EPR) in the diluted magnetic semiconductor Pb1-x-yMgxYbyTe. The magnetic susceptibility of this system is a superposition of the matrix diamagnetism, the paramagnetic contribution of electrons localized in the ytterbium band, and the Curie-Weiss paramagnetism provided by Yb3+ ions. The concentration of Yb3+ ions monotonically increases with the ytterbium content, while a significant fraction of ytterbium ions remains in a nonmagnetic Yb2+ state. A pronounced hyperfine structure was revealed in the EPR spectra. It was ascribed to the interaction between the electron magnetic moment of an unfilled electron shell of Yb3+ ions and nuclear magnetic moment of the 173Yb isotope. The estimated values of the effective g-factor (g1.997 0.002) and the hyperfine-interaction constant (173A=0,56 cm-1) were found to be almost independent of both alloy composition and temperature.

Info:

Periodical:

Solid State Phenomena (Volumes 168-169)

Main Theme:

Edited by:

V. Ustinov

Pages:

376-379

DOI:

10.4028/www.scientific.net/SSP.168-169.376

Citation:

E.A. Zvereva et al., "Magnetic Properties of New Diluted Magnetic Semiconductors Pb1-X-YMgXYbYTe", Solid State Phenomena, Vols. 168-169, pp. 376-379, 2011

Online since:

December 2010

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$35.00

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