Uniaxial strain study in purely organic ferromagnet α-TDAE-C60 -: Mechanism and structure

被引:8
作者
Mizoguchi, K [1 ]
Takei, M
Sakamoto, H
Kawamoto, T
Tokumoto, M
Omerzu, A
Mihailovic, D
机构
[1] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 1920397, Japan
[2] Natl Inst Adv Ind Sci & Technol, Nanotechnol Res Inst, Tsukuba, Ibaraki 3058568, Japan
[3] Jozef Stefan Inst, Ljubljana, Slovenia
关键词
organic ferromagnetism; uniaxial strain; ESR; curie temperature; TDAE-C60;
D O I
10.1016/j.poly.2005.03.037
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
ESR has been carried Out ill ferromagnetic alpha-TDAE-C-60 under uniaxial strain to Study the mechanism and Structure of ferromagnetism. Pressure is applied to a single crystal embedded in epoxy resin with a clamp type pressure cell. A preliminary study demonstrates that the uniaxial strain induces a change of the Curie temperature T-C, which depends on the crystal axis where the uniaxial strain applied. It is Suggested that these preliminary results seem to be consistent with the Kawamoto's model (T. Kawamoto, M. Tokumoto, H. Sakamoto, K. Mizoguchi, J. Phys. Soc. Jpn. 70 (2001) 1892.) based oil an intermolecular cooperative Jahn-Teller distortion. Further systematic studies will make clear the mechanism of the ferromagnetism. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2173 / 2175
页数:3
相关论文
共 13 条
[1]   ORGANIC MOLECULAR SOFT FERROMAGNETISM IN A FULLERENE-C60 [J].
ALLEMAND, PM ;
KHEMANI, KC ;
KOCH, A ;
WUDL, F ;
HOLCZER, K ;
DONOVAN, S ;
GRUNER, G ;
THOMPSON, JD .
SCIENCE, 1991, 253 (5017) :301-303
[2]   Evidence for S=0-type spin pairing in the nonferromagnetic modification of TDAE-C60 [J].
Arcon, D ;
Blinc, R ;
Cevc, P ;
Omerzu, A .
PHYSICAL REVIEW B, 1999, 59 (07) :5247-5251
[3]   High-field ESR in TDAE-C60 [J].
Blinc, R ;
Cevc, P ;
Arcon, D ;
Omerzu, A ;
Mehring, M ;
Knorr, S ;
Grupp, A ;
Barra, AL ;
Chouteau, G .
PHYSICAL REVIEW B, 1998, 58 (21) :14416-14423
[4]   Antiferromagnetic correlations and weak ferromagnetism in a TDAE(+)-C-60(-) single crystal [J].
Blinc, R ;
Pokhodnia, K ;
Cevc, P ;
Arcon, D ;
Omerzu, A ;
Mihailovic, D ;
Venturini, P ;
Golic, L ;
Trontelj, Z ;
Luznik, J ;
Jeglicic, Z ;
Pirnat, J .
PHYSICAL REVIEW LETTERS, 1996, 76 (03) :523-526
[5]   Jahn-Teller dynamics of the organic ferromagnet-tetrakis(dimethylamine) ethylene-C60 -: art. no. 184422 [J].
Jeglic, P ;
Blinc, R ;
Apih, T ;
Omerzu, A ;
Arcon, D .
PHYSICAL REVIEW B, 2003, 68 (18)
[6]   Theoretical study of pressure effect on TDAE-C60 [J].
Kawamoto, T ;
Tokumoto, M ;
Sakamoto, H ;
Mizoguchi, K .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2001, 70 (07) :1892-1895
[7]   A theoretical model for ferromagnetism of TDAE-C-60 [J].
Kawamoto, T .
SOLID STATE COMMUNICATIONS, 1997, 101 (04) :231-235
[8]   Magnetism of α- and β-TDAE-C60 [J].
Mizoguchi, K. ;
Takei, M. ;
Machino, M. ;
Sakamoto, H. ;
Tokumoto, M. ;
Kawamoto, T. ;
Omerzu, A. ;
Mihailovic, D. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 :E215-E216
[9]   SPIN DYNAMICS STUDY IN CONDUCTING POLYMERS BY MAGNETIC-RESONANCE [J].
MIZOGUCHI, K .
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1995, 34 (01) :1-19
[10]  
MIZOGUCHI K, 2001, PHYS REV B, V63