Open AccessСверхтонкие взаимодействия в узлах меди диэлектрических и сверхпроводящих металлооксидов меди
Author(s) -
Е.И. Теруков,
А.В. Марченко,
А.А. Лужков,
П.П. Серегин,
К.Б. Шахович
Publication year - 2020
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2020.21.50199.18037
Subject(s) - quadrupole , electric field gradient , zeeman effect , copper , metal , mössbauer spectroscopy , valence (chemistry) , superconductivity , spectroscopy , condensed matter physics , chemistry , isotope , materials science , physics , nuclear magnetic resonance , magnetic field , atomic physics , crystallography , metallurgy , nuclear physics , quantum mechanics , organic chemistry
The method of Mössbauer spectroscopy on isotopes 61Cu (61Ni) shows that for bivalent copper dielectric metal oxides, a combined quadrupole and Zeeman interaction of 61Ni nuclei with local fields in copper sites is observed, whereas for superconducting metal oxides, only quadrupole interaction of the nuclei 61Ni is detected. For all the metal oxides under consideration, the equal in value valence contribution to the electric field gradient tensor was found.