We report the basic physical properties of monoclinic Y8Co5 determined by means of magnetic susceptibility, electrical resistivity, and specific heat measurements. The crystal structure of Y8Co5 is monoclinic (P21/c) with lattice parameters a = 7.0582(6) Å, b = 7.2894(6) Å, c = 24.2234(19) Å, and β = 102.112(6)° as refined by using synchrotron powder x-ray diffraction data. The compound shows temperature independent paramagnetism with χ0 = 2.1 × 10−3 emu mol−1 and Sommerfeld parameter γ = 63 mJ mol−1 K−2. The calculated Wilson ratio for Y8Co5, RW = 1.4, is close to that expected for a free electron gas RW = 1. Low temperature resistivity under high pressure does not reveal superconductivity in this compound down to 1.2 K, up to hydrostatic pressures of 5.56 GPa. Band structure calculations (full-potential linearized augmented plane wave, FP-LAPW) derive the Stoner exchange interaction parameter S = 0.24, excluding magnetic behavior for Y8Co5.
Authors
- prof. dr hab. inż. Tomasz Klimczuk link open in new tab ,
- V. A . Sidorov,
- A. Szajek,
- M. Werwiński,
- S. A. J. Kimber,
- Agnieszka Kozub link open in new tab ,
- D. Safarik,
- J. D. Thompson,
- R. J. Cava
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1088/0953-8984/25/12/125701
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie wyróżnionym w JCR
- Language
- angielski
- Publication year
- 2013
