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Isotope effects of diatomic CH and CD complexes in Ni single crystals
Author(s) -
Kronmller H.,
König N.,
Walz F.
Publication year - 1977
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.2220790124
Subject(s) - diatomic molecule , deuterium , relaxation (psychology) , orthorhombic crystal system , hydrogen , kinetic isotope effect , isotope , chemistry , atomic physics , maxima , magnetic relaxation , analytical chemistry (journal) , nuclear magnetic resonance , crystallography , magnetic field , magnetization , physics , crystal structure , molecule , nuclear physics , psychology , social psychology , art , organic chemistry , chromatography , performance art , art history , quantum mechanics
The magnetic relaxation spectrum of Ni single crystals containing different amounts of carbon interstitials is measured after charging with hydrogen or deuterium. A relaxation maximum observed after hydrogen charging at 133 K is attributed to the reorientation aftereffect of diatomic C‐H complexes of orthorhombic symmetry. Similarly after deuterium charging a relaxation maximum at 139 K is observed. The relaxation times of both these relaxation maxima show significant isotope effects of the activation energies as well as the pre‐exponential factors. These results are discussed within the framework of an harmonic oscillator model.