Temperature induced de-polymerization in TDAE-C60

T. Kambe; S. Garaj; L. Forró; M. Fujiwara; K. Oshima

doi:10.1016/S0379-6779(02)00432-0

Temperature induced de-polymerization in TDAE-C₆₀

T. Kambe, S. Garaj, L. Forró, M. Fujiwara, K. Oshima

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

The phase change due to the polymerization of the ferromagnetic tetrakis-dimethylamino-ethylene (TDAE)-C₆₀ has been reconfirmed by applying pressures in situ up to P_c = 7 kbar in an ESR cavity. This transition is irreversible and the phase above P_c is stable even after releasing pressure. The pressure-dependent g-factor indicates the revival of the TDAE⁺ spins. Moreover, the ferromagnetism disappears simultaneously at P_c. The de-polymerization of the polymerized (pressure-released) crystal has been confirmed for the first time by the high-temperature ESR study. This transition is also irreversible and the polymer phase is stable up to 470 K. The de-polymerized phase is considered to be the original ferromagnetic one.

Original language	English
Pages (from-to)	697-698
Number of pages	2
Journal	Synthetic Metals
Volume	133-134
DOIs	https://doi.org/10.1016/S0379-6779(02)00432-0
Publication status	Published - Mar 13 2003
Event	ISCOM 2001 - Rusutsu, Hokkaido, Japan Duration: Sept 10 2001 → Sept 14 2001

Keywords

De-polymerization
Ferromagnetic
High-pressure ESR
Polymer
TDAE-C

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

Access to Document

10.1016/S0379-6779(02)00432-0

Cite this

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title = "Temperature induced de-polymerization in TDAE-C60",

abstract = "The phase change due to the polymerization of the ferromagnetic tetrakis-dimethylamino-ethylene (TDAE)-C60 has been reconfirmed by applying pressures in situ up to Pc = 7 kbar in an ESR cavity. This transition is irreversible and the phase above Pc is stable even after releasing pressure. The pressure-dependent g-factor indicates the revival of the TDAE+ spins. Moreover, the ferromagnetism disappears simultaneously at Pc. The de-polymerization of the polymerized (pressure-released) crystal has been confirmed for the first time by the high-temperature ESR study. This transition is also irreversible and the polymer phase is stable up to 470 K. The de-polymerized phase is considered to be the original ferromagnetic one.",

keywords = "De-polymerization, Ferromagnetic, High-pressure ESR, Polymer, TDAE-C",

author = "T. Kambe and S. Garaj and L. Forr{\'o} and M. Fujiwara and K. Oshima",

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note = "ISCOM 2001 ; Conference date: 10-09-2001 Through 14-09-2001",

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TY - JOUR

T1 - Temperature induced de-polymerization in TDAE-C60

AU - Kambe, T.

AU - Garaj, S.

AU - Forró, L.

AU - Fujiwara, M.

AU - Oshima, K.

PY - 2003/3/13

Y1 - 2003/3/13

N2 - The phase change due to the polymerization of the ferromagnetic tetrakis-dimethylamino-ethylene (TDAE)-C60 has been reconfirmed by applying pressures in situ up to Pc = 7 kbar in an ESR cavity. This transition is irreversible and the phase above Pc is stable even after releasing pressure. The pressure-dependent g-factor indicates the revival of the TDAE+ spins. Moreover, the ferromagnetism disappears simultaneously at Pc. The de-polymerization of the polymerized (pressure-released) crystal has been confirmed for the first time by the high-temperature ESR study. This transition is also irreversible and the polymer phase is stable up to 470 K. The de-polymerized phase is considered to be the original ferromagnetic one.

AB - The phase change due to the polymerization of the ferromagnetic tetrakis-dimethylamino-ethylene (TDAE)-C60 has been reconfirmed by applying pressures in situ up to Pc = 7 kbar in an ESR cavity. This transition is irreversible and the phase above Pc is stable even after releasing pressure. The pressure-dependent g-factor indicates the revival of the TDAE+ spins. Moreover, the ferromagnetism disappears simultaneously at Pc. The de-polymerization of the polymerized (pressure-released) crystal has been confirmed for the first time by the high-temperature ESR study. This transition is also irreversible and the polymer phase is stable up to 470 K. The de-polymerized phase is considered to be the original ferromagnetic one.

KW - De-polymerization

KW - Ferromagnetic

KW - High-pressure ESR

KW - Polymer

KW - TDAE-C

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DO - 10.1016/S0379-6779(02)00432-0

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SN - 0379-6779

VL - 133-134

SP - 697

EP - 698

JO - Synthetic Metals

JF - Synthetic Metals

T2 - ISCOM 2001

Y2 - 10 September 2001 through 14 September 2001

ER -