Superconductivity and ferromagnetism in Pd doped Y₉Co₇

Journal Article · Thu Jan 14 23:00:00 EST 2016 · Intermetallics

DOI: https://doi.org/10.1016/j.intermet.2016.01.002 · OSTI ID:1454994

Strychalska, Judyta  ^[1]; Thompson, Joe D.  ^[2]; Cava, Robert J. ^[3]; Klimczuk, Tomasz ^[1]

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1. Gdansk Univ. of Technology, Gdansk (Poland). Faculty of Applied Physics and Mathematics
2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
3. Princeton Univ., NJ (United States). Dept. of Chemistry

The ferromagnetic superconductor Y₉Co₇ was chemically doped to yield the solid solution Y₉Co_7-xPd_x for 0 < x < 0.4. The lattice parameter a does not depend on x, whereas c increases with increasing Pd content up to x = 0.2, the palladium solubility limit. The transition from ferromagnetism (T_C = 4.25 K) to superconductivity (T_sc = 2.4 K) was observed only for the parent Y₉Co₇ compound. For the lowest tested Pd doping level (x = 0.05), ferromagnetism is enhanced strongly (T_C = 9.35 K) and superconductivity is not seen above 1.8 K. Finally, the Curie temperature rapidly increases from 4.25 K to about 10 K for a Pd concentration of x = 0.1 and remains almost unchanged for Y₉Co_6.8Pd_0.2.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1454994
• Report Number(s): LA-UR--17-22947
• Journal Information: Intermetallics, Journal Name: Intermetallics Journal Issue: C Vol. 71; ISSN 0966-9795
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English