Peculiar Magnetic Property of Pyrolytic Carbon Prepared From Adamantane

Kazuyoshi Tanaka Department of Hydrocarbon Chemistry and Division of Molecular Engineering, Faculty of Engineering, Kyoto University, Kyoto, 606-01, Japan

Masahiro Kobashi Department of Hydrocarbon Chemistry and Division of Molecular Engineering, Faculty of Engineering, Kyoto University, Kyoto, 606-01, Japan

Hideki Sanekata Department of Hydrocarbon Chemistry and Division of Molecular Engineering, Faculty of Engineering, Kyoto University, Kyoto, 606-01, Japan

Akira Takata Department of Hydrocarbon Chemistry and Division of Molecular Engineering, Faculty of Engineering, Kyoto University, Kyoto, 606-01, Japan

Tokio Yamabe Department of Hydrocarbon Chemistry and Division of Molecular Engineering, Faculty of Engineering, Kyoto University, Kyoto, 606-01, Japan

Shigeyoshi Mizogami Central Research Laboratories, Idemitsu Kosan CO., LTD., 1280 Kami-izumi, Sodegaura, Chiba, 299-02, Japan

Kazushige Kawabata Central Research Laboratories, Idemitsu Kosan CO., LTD., 1280 Kami-izumi, Sodegaura, Chiba, 299-02, Japan

Jun Yamauchi College of Liberal Arts and Sciences, Kyoto University, Kyoto, 606-01, Japan

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Abstract

Magnetic-property measurements of pyrolytic carbon prepared by the thermal CVD of adamantane were carried out using the Faraday balance method and the ESR spectroscopy. The content of ferromagnetic metallic oxide as impurity in the samples has been confirmed to be low enough not to influence on the present magnetic-property measurements. Analysis of the measurement results has shown that the sample obtained are basically superparamagnetic and, even, ferromagnetic at low temperatures in a certain sample.

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Peculiar Magnetic Property of Pyrolytic Carbon Prepared From Adamantane

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