Significant magneto-elastic coupling at Griffiths-like phase boundaries in low dimensional oxides, A Sb2O6(A= Ni and Mn)

A Chatterjee; A Indra; O Gutowski; M V Zimmerman; S Majumdar; S Giri

doi:10.1088/1361-648X/abe350

Significant magneto-elastic coupling at Griffiths-like phase boundaries in low dimensional oxides, A Sb₂O₆(A= Ni and Mn)

J Phys Condens Matter. 2021 Apr 23;33(19). doi: 10.1088/1361-648X/abe350.

Authors

A Chatterjee¹, A Indra^{1

2}, O Gutowski³, M V Zimmerman³, S Majumdar¹, S Giri¹

Affiliations

¹ School of Physical Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
² Department of Physics, Sri Krishna College, Bagula, Nadia, W.B. 741502, India.
³ Deutsches Elektronen-Synchrotron, Notkestraβe 85, 22607 Hamburg, Germany.

PMID: 33542167
DOI: 10.1088/1361-648X/abe350

Abstract

The compounds, NiSb₂O₆(NSO) and MnSb₂O₆(MSO) attract the community for the quasi one-dimensional and layered structure composed of Ni²⁺and Mn²⁺, which orders antiferromagnetically atT_N= 6.7 and 12 K, respectively. Here, we report the Griffiths-like phase much aboveT_Nin the range of 37-85 K and 25-80 K for NSO and MSO, respectively. The dc magnetization results indicate the Griffiths-like phase, following the modified Curie-Weiss law. The magneto-capacitive responses for both the compounds show anomalies at the onset of the Griffiths-like phase. Intriguingly, the low temperature synchrotron diffraction results are conclusive for determining the singularities for both the compounds. Interplay between the low-dimensionality, magnetic frustration, and magneto-elastic coupling correlates the observed short range ordered state, which is suggested as a Griffiths-like phase, aboveT_Nfor both the compounds.

Keywords: Griffiths phase; magnetic properties; magneto-elastic effects.