Magnetization under high-pressure in organic ferromagnet α-TDAE-C60

T. Kambe; K. Ishida; M. Fujiwara; K. Oshima

doi:10.1016/j.jmmm.2006.10.661

Magnetization under high-pressure in organic ferromagnet α-TDAE-C₆₀

T. Kambe, K. Ishida, M. Fujiwara, K. Oshima

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The magnetization measurements under pressure were performed on the fullerene-based ferromagnet, α-TDAE-C₆₀. We found that the saturation magnetization below the ferromagnetic ordering temperature T_c is rapidly suppressed with increasing pressure and disappeared above P_{c 2} = 0.1 - 0.2 GPa. This pressure is remarkably lower than the critical pressure of polymerization P_c = 0.7 GPa. On the contrary, T_c is almost pressure independent below P_{c 2}, but, above P_{c 2}, could not be entirely determined because of the strong suppression of the magnetization. In the paramagnetic region, the susceptibility under pressure indicates the total number of spins remains unchanged around P_{c 2} as well as P_c. We discuss these results compared with the high-pressure ESR.

Original language	English
Pages (from-to)	1432-1434
Number of pages	3
Journal	Journal of Magnetism and Magnetic Materials
Volume	310
Issue number	2 SUPPL. PART 2
DOIs	https://doi.org/10.1016/j.jmmm.2006.10.661
Publication status	Published - Mar 1 2007

Keywords

Fullerene
High pressure magnetization
Organic ferromagnet
α-TDAE-C

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2006.10.661

Cite this

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title = "Magnetization under high-pressure in organic ferromagnet α-TDAE-C60",

abstract = "The magnetization measurements under pressure were performed on the fullerene-based ferromagnet, α-TDAE-C60. We found that the saturation magnetization below the ferromagnetic ordering temperature Tc is rapidly suppressed with increasing pressure and disappeared above Pc 2 = 0.1 - 0.2 GPa. This pressure is remarkably lower than the critical pressure of polymerization Pc = 0.7 GPa. On the contrary, Tc is almost pressure independent below Pc 2, but, above Pc 2, could not be entirely determined because of the strong suppression of the magnetization. In the paramagnetic region, the susceptibility under pressure indicates the total number of spins remains unchanged around Pc 2 as well as Pc. We discuss these results compared with the high-pressure ESR.",

keywords = "Fullerene, High pressure magnetization, Organic ferromagnet, α-TDAE-C",

author = "T. Kambe and K. Ishida and M. Fujiwara and K. Oshima",

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T1 - Magnetization under high-pressure in organic ferromagnet α-TDAE-C60

AU - Kambe, T.

AU - Ishida, K.

AU - Fujiwara, M.

AU - Oshima, K.

PY - 2007/3/1

Y1 - 2007/3/1

N2 - The magnetization measurements under pressure were performed on the fullerene-based ferromagnet, α-TDAE-C60. We found that the saturation magnetization below the ferromagnetic ordering temperature Tc is rapidly suppressed with increasing pressure and disappeared above Pc 2 = 0.1 - 0.2 GPa. This pressure is remarkably lower than the critical pressure of polymerization Pc = 0.7 GPa. On the contrary, Tc is almost pressure independent below Pc 2, but, above Pc 2, could not be entirely determined because of the strong suppression of the magnetization. In the paramagnetic region, the susceptibility under pressure indicates the total number of spins remains unchanged around Pc 2 as well as Pc. We discuss these results compared with the high-pressure ESR.

AB - The magnetization measurements under pressure were performed on the fullerene-based ferromagnet, α-TDAE-C60. We found that the saturation magnetization below the ferromagnetic ordering temperature Tc is rapidly suppressed with increasing pressure and disappeared above Pc 2 = 0.1 - 0.2 GPa. This pressure is remarkably lower than the critical pressure of polymerization Pc = 0.7 GPa. On the contrary, Tc is almost pressure independent below Pc 2, but, above Pc 2, could not be entirely determined because of the strong suppression of the magnetization. In the paramagnetic region, the susceptibility under pressure indicates the total number of spins remains unchanged around Pc 2 as well as Pc. We discuss these results compared with the high-pressure ESR.

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KW - High pressure magnetization

KW - Organic ferromagnet

KW - α-TDAE-C

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