ID | 34124 |
FullText URL | |
Author |
Garaj, Slaven
Forró, László
Sienkiewicz, Andrzej
Fujiwara, Motoyasu
Oshima, Kokichi
Kaken ID
researchmap
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Abstract | High-pressure electron spin resonance (ESR) measurements were performed on tetrakis(dimethylamino) ethylene (TDAE)-C-60 single crystals and stability of the polymeric phase was established in the P-T parameter space. At 7 kbar the system undergoes a ferromagnetic to paramagnetic phase transition due to the pressure-induced polymerization. The polymeric phase remains stable after the pressure release. The depolymerization of the pressure-induced phase was observed at a temperature of 520 K, revealing an unexpectedly high thermal stability of the polymer. Below room temperature, the polymeric phase behaves as a simple Curie-type insulator with one unpaired electron spin per chemical formula. The TDAE(+) donor-related unpaired electron spins, formerly ESR silent, become active above a temperature of 320 K, which demonstrates that the magnetic properties are profoundly defined by miniscule reorientation of TDAE molecules. |
Note | Published with permission from the copyright holder.
This is the institute's copy, as published in Physical Review B, October 2003, Volume 68, Issue 14, Pages 7. Publisher URL: http://dx.doi.org/10.1103/PhysRevB.68.144430 Direct access to Thomson Web of Science record Copyright © 2003 The American Physical Society. All rights reserved. |
Published Date | 2003-10
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Publication Title |
Physical Review B
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Volume | volume68
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Issue | issue14
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Content Type |
Journal Article
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language |
English
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Refereed |
True
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DOI | |
Web of Science KeyUT | |
Submission Path | physics_general/35
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