Abstract
We succeeded in growing five new single crystalline compounds RPt2Cd20(R = La, Ce, Pr, Nd, and Sm) by the Cd self-flux method. These compounds are found to crystallize in the cubic CeCr2Al20-type crystal structure by the X-ray diffraction using single crystals. We measured the electrical resistivity, magnetic properties, and specific heat for all compounds. The resistivity for R = Ce, Nd, and Sm indicates an abrupt decrease, which might correspond to a magnetic transition. It is suggested that the ground state of CePt2Cd20is Γ7doublet from the magnetization measurement. The magnetization of PrPt2Cd20shows a metamagnetic behavior at 1.6 T in the paramagnetic state, which could be due to the crystalline electric field effect with non-Kramers Γ3doublet or Γ1singlet ground state. The contribution of optical phonon modes to the lattice specific heat is discussed in LaPt2Cd20.
Original language | English |
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Pages (from-to) | 332-338 |
Number of pages | 7 |
Journal | Journal of Alloys and Compounds |
Volume | 693 |
DOIs | |
Publication status | Published - 2017 Jan 1 |
Keywords
- CeCrAl-type structure
- New rare earth intermetallic compound
- RPtCd
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry