Effects of Stoichiometry and Impurities on the Metal-to-Semimetal Transition in NiS
- 1 July 1972
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 43 (7), 3127-3131
- https://doi.org/10.1063/1.1661671
Abstract
A study of the effects of stoichiometry and impurity content on the temperature of the metal‐to‐semimetal transition in hexagonal NiS has been made. It was found that the cation‐anion ratio was the only factor significantly affecting Tt. Substitution of impurity ions for nickel or sulfur produced minor effects unless those impurities could affect the cation‐anion ratio by forming a second phase. An annealing process was used to remove sulfur from single crystals of NixS in order to obtain samples with desired values of x between 0.96 and 1.Keywords
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