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Antiferromagnetism in Amorphous Carbon Films
Author(s) -
Macfarlane J. M.,
McLintock I. S.,
Orr J. C.
Publication year - 1973
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220550128
Subject(s) - antiferromagnetism , annealing (glass) , amorphous solid , materials science , amorphous carbon , condensed matter physics , atmospheric temperature range , transition temperature , carbon film , nuclear magnetic resonance , analytical chemistry (journal) , thin film , crystallography , chemistry , nanotechnology , composite material , thermodynamics , superconductivity , organic chemistry , physics
Measurements of the ESR absorption in amorphous carbon films over the temperature range 77 to 300 K provide evidence of an antiferromagnetic transition at 100 K. This transition temperature is not affected by prior annealing of the films in vacuo at temperatures up to 550 K. The ESR line width is independent of temperature between 77 and 300 K. The relationship of these results to current theories on the structure of carbon films and related materials is discussed.