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    Phase transitions in thin iron-palladium films

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    LD5655.V856_1982.M387.pdf (2.183Mb)
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    Date
    1982
    Author
    Mattozzi, Raymond William
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    Abstract
    Sputtered thin films have the capability of producing a very random distribution of alloying elements within a host element. This study demonstrates the ability of the SQUID (Superconducting Quantum Undulating Interference Device) to measure the Curie temperature of thin films of Pd(1-x)Fe(x). The Curie temperatures of these films were found to be significantly less than bulk samples having the same iron concentration. The Curie temperature, furthermore, showed a systematic shift to higher values as the thickness of the film increased. Magnetic structure below the Curie temperature is revealed in magnetization and a.c. susceptibility curves for x=. 078. For other samples susceptibility data exhibited more sensitivity than magnetization in revealing magnetic detail below the Curie temperature. We attribute some of this magnetic detail to cluster glass behavior.
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    http://hdl.handle.net/10919/81011
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    • Doctoral Dissertations [16334]

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