Magnetic defects in La2-xSrxCuO4-

F. Zuo; X. D. Chen; J. R. Gaines; A. J. Epstein

doi:10.1103/PhysRevB.38.901

Magnetic defects in La2-xSrxCuO4-

F. Zuo, X. D. Chen, J. R. Gaines, A. J. Epstein

Research output: Contribution to journal › Article

12 Scopus citations

Abstract

We report the magnetization as a function of magnetic field and temperature for as-grown and doped La2CuO4. Two samples of La2CuO4 with differing oxygen treatment and a sample of La1.995Sr0.005CuO4 exhibited TN of 225, 240, and 215 K, respectively. An anomalous magnetic field dependence of the magnetization was observed above and below TN for each of these samples, suggestive of the presence of small ferromagnetically coupled domains present within each of these samples. Below TN these ferromagnetic regions appear antiferromagnetic until application of a critical field switches them to a ferromagnetic domain. Samples of La2-xSrxCuO4 with x=0.05 and 0.15 show no antiferromagnetic ordering and no anomalous ferromagnetic domains. These anomalous magnetic effects give credence to models of formation of unusual magnetic domains within these antiferromagnetically coupled materials.

Original language	English (US)
Pages (from-to)	901-904
Number of pages	4
Journal	Physical Review B
Volume	38
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.38.901
State	Published - Jan 1 1988
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics

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Zuo, F., Chen, X. D., Gaines, J. R., & Epstein, A. J. (1988). Magnetic defects in La2-xSrxCuO4-. Physical Review B, 38(1), 901-904. https://doi.org/10.1103/PhysRevB.38.901

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N2 - We report the magnetization as a function of magnetic field and temperature for as-grown and doped La2CuO4. Two samples of La2CuO4 with differing oxygen treatment and a sample of La1.995Sr0.005CuO4 exhibited TN of 225, 240, and 215 K, respectively. An anomalous magnetic field dependence of the magnetization was observed above and below TN for each of these samples, suggestive of the presence of small ferromagnetically coupled domains present within each of these samples. Below TN these ferromagnetic regions appear antiferromagnetic until application of a critical field switches them to a ferromagnetic domain. Samples of La2-xSrxCuO4 with x=0.05 and 0.15 show no antiferromagnetic ordering and no anomalous ferromagnetic domains. These anomalous magnetic effects give credence to models of formation of unusual magnetic domains within these antiferromagnetically coupled materials.

AB - We report the magnetization as a function of magnetic field and temperature for as-grown and doped La2CuO4. Two samples of La2CuO4 with differing oxygen treatment and a sample of La1.995Sr0.005CuO4 exhibited TN of 225, 240, and 215 K, respectively. An anomalous magnetic field dependence of the magnetization was observed above and below TN for each of these samples, suggestive of the presence of small ferromagnetically coupled domains present within each of these samples. Below TN these ferromagnetic regions appear antiferromagnetic until application of a critical field switches them to a ferromagnetic domain. Samples of La2-xSrxCuO4 with x=0.05 and 0.15 show no antiferromagnetic ordering and no anomalous ferromagnetic domains. These anomalous magnetic effects give credence to models of formation of unusual magnetic domains within these antiferromagnetically coupled materials.

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