Organic molecular soft ferromagnetism in a fullerene c60.
The properties of an organic molecular ferromagnet [C(60)TDAE(0.86); TDAE is tetrakis(dimethylamino)ethylene] with a Curie temperature ;T(c) = 16.1 kelvin are described. The ferromagnetic state shows no remanence, and the temperature dependence of the magnetization below ;T(c) does not follow the behavior expected of a conventional ferromagnet. These results are interpreted as a reflection of a three-dimensional system leading to a soft ferromagnet.
Allemand
P M
PM
Khemani
K C
KC
Koch
A
A
Wudl
F
F
Holczer
K
K
Donovan
S
S
Grüner
G
G
Thompson
J D
JD