Superconductivity in Palladium Hydride Systems

DOI HANDLE Web Site Web Site 1 Citations 107 References Open Access
  • Kawae, Tatsuya
    Department of Applied Quantum Physics, Faculty of Engineering, Kyushu University Research Center for Quantum Nano-Spin Sciences, Kyushu University
  • Inagaki, Yuji
    Department of Applied Quantum Physics, Faculty of Engineering, Kyushu University Research Center for Quantum Nano-Spin Sciences, Kyushu University
  • Wen, Si
    Department of Applied Quantum Physics, Faculty of Engineering, Kyushu University
  • Hirota, Souhei
    Department of Applied Quantum Physics, Faculty of Engineering, Kyushu University
  • Itou, Daiki
    Department of Physics, Faculty of Science, Kyushu University
  • Kimura, Takashi
    Department of Physics, Faculty of Science, Kyushu University Research Center for Quantum Nano-Spin Sciences, Kyushu University

Search this article

Abstract

The superconductivity of palladium–hydride (Pd–H) system was discovered by Skoskiewicz in 1972. Thereafter, many studies have been carried out on Pd–H and palladium deuteride (Pd–D) systems along with their alloyed (Pd–metal–H) systems. In this paper, we present a brief overview of superconducting properties of these systems. First, we describe methods for H loading into Pd, in which three principal techniques, i.e., gas loading, electrochemical loading, and H implantation are introduced. Next, we briefly summarize the superconducting properties of Pd–H(D) systems, e.g., the concentration dependence of the transition temperature T_c, inverse isotope effect, critical field, pressure dependence of T_c, and the impurity effects. Subsequently, we describe our recent in-situ magnetization measurements of superconducting Pd–H and Pd–D powders with 1–2 µm diameters prepared by low-temperature H absorption, in which the absorption was performed below 200 K under hydrogen (H_2) or deuterium (D_2) gas atmosphere. Additionally, we report resistance measurements of a Pd–H film with ∼100 nm thickness prepared by the same H absorption procedure. The superconducting transition temperature of the film is consistent with that of the powders. From these results, we conclude that the low-temperature H absorption method is useful for preparing high quality Pd–H and Pd–D samples.

Journal

Citations (1)*help

See more

References(107)*help

See more

Related Projects

See more

Keywords

Details 詳細情報について

Report a problem

Back to top