DOI: 10.1063/1.349966. Magnetization and magnetic susceptibility of the diluted magnetic semiconductors Zn1−xCoxS and Zn1−xCoxSe

Magnetization and magnetic susceptibility of the diluted magnetic semiconductors Zn1−xCoxS and Zn1−xCoxSe

10.1063/1.349966

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

Magnetization measurements have been done at 1.5 K and magnetic fields up to 7 T by using extraction method on the samples with x=0.0055, 0.048, 0.063 for Zn1−xCoxS and x=0.0097, 0.030, 0.037, 0.042 for Zn1−xCoxSe. In both Co-based systems, the magnetization increases with x. A modified Brillouin function fits the data and the fitting parameters T0( ≳ 0) and Seff are obtained. These results reflect that there exists a strong antiferromagnetic interaction among Co++ ions and the antiferromagnetic interaction in Zn1−xCoxSe is stronger than that in Zn1−xCoxS. Magnetic susceptibility was measured in the temperature range 1.5 K≤T≤300 K by using a vibrating-sample magnetometer. The susceptibility displays a high-temperature Curie–Weiss behavior. From quantitative analysis we obtain the nearest-neighbor Co++–Co++ exchange integral constant J1/kB for sulfides and selenides to be −51±6 K and −57±8 K, respectively. This value is at least three times as large as that in their Mn-based counterparts, and we confirm that the antiferromagnetic interaction is stronger in Zn1−xCoxSe than in Zn1−xCoxS. By using our results in conjunction with a direct measurement of the nearest-neighbor exchange JNN from recent inelastic neutron scattering for Zn1−xCoxS, we obtain an estimate of the next-nearest-neighbor exchange constant J2/kB = −8 K.

Bibliography

Chen, C., Gao, W., Qin, Z., Hu, W., Qu, M., & Giriat, W. (1991). Magnetization and magnetic susceptibility of the diluted magnetic semiconductors Zn1âxCoxS and Zn1âxCoxSe. Journal of Applied Physics, 70(10), 6277â6279.

Authors 6

Chen-jia Chen (first)
Wei Gao (additional)
Zhi-feng Qin (additional)
Wei Hu (additional)
Ming Qu (additional)
W. Giriat (additional)

References 12 Referenced 20

10.1063/1.341700 / J. Appl. Phys. (1988)
10.1103/PhysRevB.39.5865 / Phys. Rev. B (1989)
{'key': '2024020414335991600_r3', 'first-page': '504', 'volume': '41', 'year': '1990', 'journal-title': 'Phys. Rev. B'} / Phys. Rev. B (1990)
10.1103/PhysRevB.40.2379 / Phys. Rev. B (1989)
10.1103/PhysRevLett.35.1372 / Phys. Rev. Lett. (1975)
{'key': '2024020414335991600_r6', 'first-page': '435', 'volume': '29', 'year': '1979', 'journal-title': 'Solid State Commun.'} / Solid State Commun. (1979)
10.1103/PhysRevLett.5.468 / Phys. Rev. Lett. (1960)
{'key': '2024020414335991600_r8', 'first-page': '16', 'volume': '21', 'year': '1966', 'journal-title': 'Philips Res. Rep.'} / Philips Res. Rep. (1966)
10.1103/PhysRevB.33.3407 / Phys. Rev. B (1986)
10.1103/PhysRevB.37.3707 / Phys. Rev. B (1988)
10.1103/PhysRevB.33.1789 / Phys. Rev. B (1986)
10.1063/1.347784 / J. Appl. Phys. (1991)

Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 8:27 a.m.)
Deposited	1 year, 7 months ago (Feb. 4, 2024, 9:34 a.m.)
Indexed	1 month ago (Aug. 2, 2025, 12:55 a.m.)
Issued	33 years, 9 months ago (Nov. 15, 1991)
Published	33 years, 9 months ago (Nov. 15, 1991)
Published Print	33 years, 9 months ago (Nov. 15, 1991)

Funders 0

None

BibTeX

@article{Chen_1991, title={Magnetization and magnetic susceptibility of the diluted magnetic semiconductors Zn1âˆ’xCoxS and Zn1âˆ’xCoxSe}, volume={70}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.349966}, DOI={10.1063/1.349966}, number={10}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Chen, Chen-jia and Gao, Wei and Qin, Zhi-feng and Hu, Wei and Qu, Ming and Giriat, W.}, year={1991}, month=nov, pages={6277â€“6279} }

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