Electron paramagnetic resonance of the Eu{sup 2+} ion in the diluted magnetic semiconductor Pb{sub 1{minus}x}Eu{sub x}S

Journal Article · Mon Dec 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.13724· OSTI ID:550505

Isber, S; Misra, S K ^[1]; Charar, S; Gratens, X; Averous, M ^[2]; Golacki, Z ^[3]

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1. Physics Department, Concordia University, 1455 de Maisonneuve Boulevard West, Montreal, Quebec, H3G 1M8 (CANADA)
2. Groupe dEtudes des Semiconducteurs URA 357, Universite de Montpellier II, Place Eugene Bataillon, 34095 Montpellier Cedex 5 (France)
3. Institute of Physics, Polish Academy of Sciences, Pl. 02-668, Warsaw (Poland)

X-band (9.56 GHz) electron-paramagnetic-resonance (EPR) measurements were performed on a Pb{sub 1{minus}x}Eu{sub x}S (x{approximately}0.016) single crystal at room and liquid-helium temperatures. The values of the spin-Hamiltonian parameters were deduced to be g=1.972, b{sub 4}=0.438GHz, and b{sub 6}={minus}0.019GHz at 295 K, and g=1.975, b{sub 4}=0.448GHz, and b{sub 6}={minus}0.011GHz at 4.2 K. The EPR data show that the Eu{sup 2+} site symmetry is cubic, indicating a true substitution of Pb{sup 2+} ions by Eu{sup 2+} ions in the lattice of PbS. The resolved hyperfine structure in the EPR spectrum of Eu{sup 2+} was observed only at 2.2 K; the hyperfine constant was estimated to be A=2.92mT. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 550505
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 21 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRON SPIN RESONANCE
EUROPIUM SULFIDES
HYPERFINE STRUCTURE
LEAD SULFIDES