DOI: 10.1063/1.2163533. Studies of Curie-Point Increases in EuO

10.1063/1.2163533

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

The ferromagnetic transition temperature (TC) of EuO has been increased from 69° to 135°K by selectively doping to increase the electrical conductivity. Three different chemical systems have been studied: the EuO-Eu, the EuO-Eu-RE2O3, and the EuO-RES systems (RE is a rare earth other than europium). Compositions in the latter system were multiphase because the solubility of the rare-earth sulfides in EuO is very small and it was necessary to add about 10% to cause significant Curie-temperature increase. Single crystals have been grown from ternary compositions in the EuO-Eu-RE2O3 system with magnetizations at 77°K as high as 170 G cm3/g and ferromagnetic Curie temperatures (TC) close to the paramagnetic θ values, a condition not observed in the other doped europium chalcogenides. The effect of the Eu metal on the formation of these crystals and its role in “forcing” the trivalent rare-earth oxide into the rock-salt lattice is discussed. From Kerr measurements and the optical absorption data it is shown that the magnitude of the rotation of the doped material at 80°K is equal to that of pure EuO at 18°K. This makes this material attractive for use in magneto-optical devices operating at nitrogen temperature.

Bibliography

Shafer, M. W., & McGuire, T. R. (1968). Studies of Curie-Point Increases in EuO. Journal of Applied Physics, 39(2), 588â590.

Authors 2

M. W. Shafer (first)
T. R. McGuire (additional)

References 5 Referenced 78

{'key': '2024020210265178800_r1', 'first-page': '18', 'volume': '13', 'year': '1964', 'journal-title': 'Phys. Rev. Letters'} / Phys. Rev. Letters (1964)
{'key': '2024020210265178800_r1a'}
{'key': '2024020210265178800_r1b', 'first-page': '977', 'volume': '37', 'year': '1966', 'journal-title': 'J. Appl. Phys.'} / J. Appl. Phys. (1966)
10.1063/1.1708494 / J. Appl. Phys. (1966)
10.1063/1.1656230 / J. Appl. Phys. (1968)

Dates

Type	When
Created	19 years, 7 months ago (Jan. 12, 2006, 4:17 p.m.)
Deposited	1 year, 6 months ago (Feb. 2, 2024, 6:05 a.m.)
Indexed	4 weeks, 1 day ago (Aug. 2, 2025, 1:14 a.m.)
Issued	57 years, 6 months ago (Feb. 1, 1968)
Published	57 years, 6 months ago (Feb. 1, 1968)
Published Print	57 years, 6 months ago (Feb. 1, 1968)

Funders 0

None

BibTeX

@article{Shafer_1968, title={Studies of Curie-Point Increases in EuO}, volume={39}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.2163533}, DOI={10.1063/1.2163533}, number={2}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Shafer, M. W. and McGuire, T. R.}, year={1968}, month=feb, pages={588–590} }

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