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The effects of nonstoichiometry and electron concentration on the properties of LixHfTe2−y

Authors
Journal
Journal of Physics and Chemistry of Solids
0022-3697
Publisher
Elsevier
Publication Date
Volume
46
Issue
12
Identifiers
DOI: 10.1016/0022-3697(85)90084-8

Abstract

Abstract In order to assess the relative contributions of excess electrons from lithium interstitials and tellurium vacancies to the electronic structure of HfTe 2, samples of Li x HfTe 2− y were prepared by high-temperature synthesis. Powder X-ray diffraction analysis shows the hexagonal a parameter to be a weak function of surplus electron count ( x + 2 y), but the c parameter to be a strong function of Li content. Magnetic measurements indicate that the lithium interstitials donate more electrons to the conduction band than donated by the tellurium vacancies. Several of the samples with high surplus electron count show unusual magnetic behavior at low temperatures and low fields.

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