Low dimensionality and magnetic frustration of Ni<sub>5.15</sub>Sn<sub>0.85</sub>(O<sub>2</sub>BO<sub>3</sub>)<sub>2 </sub>hulsite

POSTER

Abstract

Ni5.15Sn0.85(O2BO3)2 hulsite has a complex magnetic transition at 180 K, one of the highest order temperatures among the oxyborates [1]. To characterize the low-dimensional properties of Ni5.15Sn0.85(O2BO3)2 hulsite, we combine bulk techniques as x-ray diffraction, XAS, magnetic and specific heat with local probe 119Sn Mössbauer spectroscopy. Hulsite compounds are the less studied in the family of oxyborates, their properties are determined by planes instead of one-dimensional subunits as ladders in ludwigites or ribbons in warwickites. The transition metal ions in hulsite form two planar substructures, one is a rectangular lattice, responsible for the magnetic transition, the other is a triangular lattice, which does not order down to 3 K. The experimental results suggest a spin-liquid behavior for this subsystem. The two planar substructures coexist as independent magnetic subsystems down to the lowest temperatures of our experiments [1].

[1] C.P.C. Medrano et al., PRB 98, 054435 (2018)

*LNLS and LDRX-UFF are acknowledged for use of their laboratory facilities. Also the support
from the Brazilian agencies FAPERJ, CNPq, and FAPES are gratefully acknowledged.

Presenters

  • Cynthia Paola P. C. Medrano

    • UFF - Universidade Federal Fluminense
    • COMAN, Centro Brasileiro de Pesquisas Fisicas

Authors

  • Cynthia Paola P. C. Medrano

    • UFF - Universidade Federal Fluminense
    • COMAN, Centro Brasileiro de Pesquisas Fisicas

  • Daniele C Freitas

    • UFF - Universidade Federal Fluminense
    • Instituto de Física, Universidade Federal Fluminense

  • Edson C. Pasamani

    • Departamento de Física, Universidade Federal do Espírito Santo

  • J. A. L. C. Resende

    • Instituto de Ciências Exatas e da Terra, Universidade Federal do Mato Grosso

  • Mariella Alzamora

    • Campus Duque de Caxias, Universidade Federal do Rio de Janeiro

  • Eduardo Granado

    • UNICAMP - Universidade Estadual de Campinas
    • “Gleb Wataghin” Institute of Physics, University of Campinas
    • Instituto de Física “Gleb Wataghin”, UNICAMP

  • Carlos William Galdino

    • UNICAMP - Universidade Estadual de Campinas
    • “Gleb Wataghin” Institute of Physics, University of Campinas

  • Mucio A. Continentino

    • CBPF - Centro Brasileiro de Pesquisas Físicas
    • COMAN, Centro Brasileiro de Pesquisas Fisicas

  • Elisa Baggio-Saitovitch

    • COMAN, Centro Brasileiro de Pesquisas Fisicas
    • Centro Brasileiro de Pesquisas Fisicas

  • Dalber R Candela

    • Instituto de Física, Universidade Federal Fluminense