Uniaxial negative thermal expansion in a tetragonal V3S-type superconductor IrZr3

Yoshikazu Mizuguchi

doi:10.7566/JPSJ.92.074601

Uniaxial negative thermal expansion in a tetragonal V3S-type superconductor IrZr3

Materials Science 2023-06-14 v1 Superconductivity

Authors: Yoshikazu Mizuguchi

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Abstract

Recently, uniaxial negative thermal expansion (NTE) has been observed in transition-metal zirconides including tetragonal (CuAl2-type) CoZr2 and orthorhombic (Re3B-type) CoZr3. Here, we report the observation of uniaxial NTE in tetragonal (V3S-type) IrZr3. With increasing temperature, the lattice parameter for the a-axis and volume of IrZr3 increase, but the lattice parameter for the c-axis decreases. IrZr3 is a superconductor with a transition temperature of 2.3 K. The present result suggests that uniaxial NTE and related anomalous axis thermal expansion occur in various transition-metal zirconides, which will be important for designing superconducting device robust to temperature cycles using zero-thermal-expansion superconductors.

Keywords

uniaxial negative thermal expansion transition-metal zirconides irzr3 superconductor thermal expansion zero-thermal-expansion

Cite

@article{arxiv.2212.03583,
  title  = {Uniaxial negative thermal expansion in a tetragonal V3S-type superconductor IrZr3},
  author = {Yoshikazu Mizuguchi},
  journal= {arXiv preprint arXiv:2212.03583},
  year   = {2023}
}

Comments

10 pages, 5 figures, Supplemental materials

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