2008/05/05 by V. K. Anand, Z. Hossain, C. Geibel
Chemistry · Materials Science · Physics and Astronomy · #Atomic physics #Chemistry #Computer science #Condensed matter physics #Crystal structure #Crystallography #Ground state #Iron-based superconductors research #Magnetic and transport properties of perovskites and related materials #Order (exchange) #Orthorhombic crystal system #Physics #Rare-earth and actinide compounds #Ternary operation #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.77.184407
published as Phys. Rev. B, 77 (2008) 1 · 14 pages, 7 figures
openalex publication_date 2008/05/05 · arxiv created 2008/08/21 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We report our results on two ternary intermetallic compounds Pr2Pd3Ge5 and Pr2Rh3Ge5 based on magnetic susceptibility, magnetization, specific heat, resistivity, and magnetoresistance data. These compounds form in U2Co3Si5-type orthorhombic structure (space group Ibam). Pr2Pd3Ge5 exhibits two magnetic transitions at TN1=7.5 K and TN2=8.3 K. In the magnetically ordered state, Pr2Pd3Ge5 exhibits a field-induced metamagnetic transition and unusually large magnetoresistance. Pr2Rh3Ge5 does not show any phase transition down to 0.5 K. It has a crystal electric field singlet ground state, separated from the first excited state by about 10 K. The low lying crystal field excitations lead to exciton mediated electronic mass enhancement, as evidenced by a large Sommerfeld coefficient (\ensuremathγ\ensuremath∼80 mJ/mol K2) in Pr2Rh3Ge5.