In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 33, No. 4R ( 1994-04-01), p. 1865-
Abstract:
An increment of electron paramagnetic absorption was observed in a dimethylformamide (DMF) solution of polyvinylidenefluoride (PVDF) in which C 60 was ultrasonically dispersed. A polymer film containing paramagnetic C 60 was obtained by vacuum evaporation of the solvent DMF, and the film, which was free from metallic contaminations, exhibited ferromagnetic characteristics even at ambient temperatures. A transmission electron microscope (TEM) observation on thin slices of the sample film showed rod-shaped aggregates of fine crystalline C 60 with cross sections of 2–8 µ m which were regularly arrayed and aligned in a certain direction. By laser desorption ionization time-of-flight mass spectroscopy (LDITOF-MS) on the samples, C 60 adducts with R (R=H, F, CF 3 and polymer fragments) were detected, which seemed to be formed as C 60 radical adducts immediately after scission of the polymer chain by sonication. The observed magnetism seems to be carried out by the radical adducts represented as C 60 R n , where n is odd.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.33.1865
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1994
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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