Synthesis and Characterization of EuPtIn$_{4}$ single crystals

POSTER

Abstract

Rare earth-based indides present a large variety of interesting phenomena ranging from magnetism to valence fluctuation and heavy fermion superconductivity. Here we report on the synthesis and characterization of EuPtIn$_{4}$ single crystals grown by In-flux. This compound adopts the orthorhombic YNiAl$_{4}$-type structure (space group Cmcm) with refined lattice parameters a= 4.5424(8) \AA, b= 16.954(3) \AA, c= 7.389(1) \AA. Electrical resistivity measurements reveal a metallic behavior at high temperatures with $\rho_{\mathrm{300}\,K} = 0.02(1)$ m$\Omega$cm and a clear peak at $13.3$ K. Magnetic susceptibility measurements show Curie-Weiss behaviour above 20 K followed by an antiferromagnetic phase transition at $T_{N} = 13.3$ K. The experimental magnetic moment $\mu_{\mathrm{exp}}= 7.91(5)$ $\mu_{B}$/Eu is in excellent agreement with that of the free Eu$^{+2}$ ion $\mu_{\mathrm{eff}}= 7.94$ $\mu_{B}$. Electron spin resonance measurements will shed light on the Eu$^{+2}$ spin dynamics in this compound.

*FAPESP-SP, AFOSR MURI, CNPq and FINEP-Brazil.

Authors

  • Priscila Rosa

    • University of Campinas
    • Univ of California - Irvine
    • University of California at Irvine, Universidade Estadual de Campinas

  • Ted Grant

    • Univ of California - Irvine
    • University of California - Irvine
    • Departament of Physics and Astronomy, University of California at Irvine, 92697, Irvine - CA, USA
    • University of California at Irvine

  • Camilo Jesus

    • Universidade Estadual de Campinas

  • Mario Piva

    • Universidade Estadual de Campinas

  • Pascoal Pagliuso

    • University of Campinas
    • Universidade Estadual de Campinas

  • Zachary Fisk

    • University of California, Irvine
    • Univ of California - Irvine
    • Departament of Physics and Astronomy, University of California at Irvine, 92697, Irvine - CA, USA
    • University of California at Irvine
    • University of California Irvine
    • Dept. of Physics and Astronomy, University of California, Irvine