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Magnetic Properties of Organic Ferromagnetic TDAE-C60 Single Crystals and Thin Films

Published online by Cambridge University Press:  10 February 2011

M. Tokumoto
Affiliation:
Electrotechnical Laboratory, Tsukuba, Ibaraki 305, Japan
Y. Tsubaki
Affiliation:
Science University of Tokyo, Noda, Chiba 278, Japan
K. Pokhodnya
Affiliation:
Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia
Y. sakakibara
Affiliation:
Electrotechnical Laboratory, Tsukuba, Ibaraki 305, Japan
A. Omerzu
Affiliation:
Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia
D. Mihailovic
Affiliation:
Jozef Stefan Institute, Jamova 39, Ljubljana, Slovenia
T. Uchida
Affiliation:
Science University of Tokyo, Noda, Chiba 278, Japan
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Abstract

Recent progress in the study on magnetic properties of molecular soft ferromagnet TDAE-C60 (where TDAE is tetrakis(dimethylamino) ethylene) is reported. Both crystalline and thin film samples are prepared by the diffusion method and the temperature and field dependence of magnetization are studied by SQUID magnetometer. The magnetic behaviors of single crystals were found to vary from sample to sample. In best single crystals, the saturation magnetization as high as 1.0 μB/C60 has been observed. Spontaneous magnetization and its temperature dependence was evaluated from the Arrott plot. The ferromagnetic phase transition was also observed in TDAE-C60 thin films.

Type
Research Article
Copyright
Copyright © Materials Research Society 1998

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