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Electrointercalation of Cu into 2H-TaS2: in situ monitoring of reaction and Cu mobility

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Abstract

We investigated the181Ta nuclear quadrupole interaction (NQI) in crystals of Cux TaS2 by time differential perturbed angular correlation (TDPAC) both in situ during galvanostatic intercalation at 300 K and subsequently between 11 K and 813 K. During electrointercalation the spectra show broad frequency distributions due to slowly diffusing Cu+ in the van der Waals gap.

The line narrowing upon heating to 813 K can be described by a simple two site jump model. Within this model we derive an activation enthalpy for Cu+ jumps of about 290 meV.

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Authors and Affiliations

  1. Walther-Meissner-Institut für Tieftemperatuforschung der Bayerischen Akademie der Wissenschaften, Walther-Meissner-Str. 8, 8046, Garching, FRG

    C. Ramos & A. Lerf

  2. Physik Department, Technische Universität München, James-Franck-Str., 8046, Garching, FRG

    T. Butz

Authors
  1. C. Ramos
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  2. A. Lerf
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  3. T. Butz
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Ramos, C., Lerf, A. & Butz, T. Electrointercalation of Cu into 2H-TaS2: in situ monitoring of reaction and Cu mobility. Hyperfine Interact 61, 1209–1213 (1990). https://doi.org/10.1007/BF02407604

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  • DOI: https://doi.org/10.1007/BF02407604

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