Abstract
We have discovered a new family of rare earth compounds that we identify as R 2− x Pt 4Ga 8+ y . Single crystals of this family have been grown for RLa, Ce, Pr, Nd, Sm, Gd, Er, Yb and Y. Many members (cerium, praseodymium, neodymium, samarium and erbium) show large anisotropies in their magnetic susceptibility; further, electrical resistance, magnetic susceptibility and specific heat measurements on the cerium member indicate that it is very possibly a heavy-electron compound with an electronic specific heat γ ≈ 1 J K −2 mol −1. Additionally, other members of the family have a magnetic transition at low temperatures. The electrical resistance, magnetic susceptibility and specific heat in fields will be presented for the praseodymium-based compound in which there is a field-induced transition.
Highlights
Paramagnetic temperature 4) for field applied parallel (4)p~), and perpendicular (4)p~) to the c axis, magnetic transition temperature Tm from susceptibility anomalies, deficiency in the rare earth site from susceptibility results (see text) f o r H il c (xll) and H 2
We have discovered a new family of rare earth-platinum-gallium compounds R-Pt-Ga (R = La, Ce, Pr, Nd, Sm, Gd, Er, Yb and Y) that have been grown as single crystals
Resistance measurements show that all members have a resistance ratio R(300 K)/R(2 K) of order unity, suggesting the presence of crystallographic disorder. Further evidence for this comes from magnetic susceptibility measurements
Summary
Paramagnetic temperature 4) for field applied parallel (4)p~), and perpendicular (4)p~) to the c axis, magnetic transition temperature Tm from susceptibility anomalies, deficiency in the rare earth site from susceptibility results (see text) f o r H il c (xll) and H 2. If there is no magnetic transition in Ce2_=Pt4Gas+u, the low-temperature state has a very large C/T=4 J K-2 mol -I.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
