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Ferroelectricity in natural samples of chalcocite, Cu 2 S
Author(s) -
Bieniulis Mark Z.,
Corry Charles E.,
Hoskins Earl R.
Publication year - 1987
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl014i002p00135
Subject(s) - chalcocite , ferroelectricity , mineralogy , materials science , dielectric , crystallite , curie temperature , permittivity , copper , hysteresis , electrical resistivity and conductivity , condensed matter physics , analytical chemistry (journal) , geology , metallurgy , chemistry , optoelectronics , chalcopyrite , electrical engineering , physics , chromatography , ferromagnetism , engineering
A structural phase transition, conductivity and dielectric permittivity anomalies, together with a polarization hysteresis loop which collapses above the Curie temperature (∼ 105°C) provide converging lines of evidence for ferroelectricity in the single and polycrystalline natural samples of chalcocite, Cu 2 S, investigated. Chalcocite is an important ore of copper, and its electrical properties are a factor both in exploration for the mineral and processing the ore.