Grazing incidence x-ray scattering (GIXS) and x-ray diffraction (XRD) techniques have been employed to study the microscopic structure of magnetic digital layers of Mn/GaAs and MnGa/GaAs. Samples with various GaAs layer thickness (8 to 16 monolayers) and a half monolayer of either Mn or MnGa were prepared by low-temperature molecular-beam epitaxy. All digital alloys consist of 50 periods of magnetic layers separated by GaAs. High crystalline quality was verified and the periodicity and layer thickness were determined from the GIXS and XRD data. In order to investigate the magnetic properties, we performed magnetization measurements on all samples using superconducting quantum interference device magnetometry (SQUID). (C) 2002 American Institute of Physics.
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Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA
Kawakami, RK
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Johnston-Halperin, E
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Johnston-Halperin, E
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Chen, LF
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Chen, LF
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Hanson, M
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Hanson, M
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Guébels, N
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Guébels, N
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Speck, JS
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Speck, JS
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Gossard, AC
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Gossard, AC
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Awschalom, AA
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机构:Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA
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Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USAUniv Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA
Kawakami, RK
;
Johnston-Halperin, E
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机构:Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA
Johnston-Halperin, E
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Chen, LF
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机构:Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA
Chen, LF
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Hanson, M
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机构:Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA
Hanson, M
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Guébels, N
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机构:Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA
Guébels, N
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Speck, JS
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机构:Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA
Speck, JS
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Gossard, AC
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机构:Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA
Gossard, AC
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Awschalom, AA
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机构:Univ Calif Santa Barbara, Ctr Spintron & Quantum Computat, Dept Phys, Santa Barbara, CA 93106 USA