Freezing of short-range ordered antiferromagnetic clusters in the CrFeTi<sub>2</sub>O<sub>7</sub> system
We report on the CrFeTi<sub>2</sub>O<sub>7</sub>(CFTO) system using a combination of x-ray diffraction, dc magnetization, ac susceptibility, specific heat and neutron diffraction measurements. CFTO is seen to crystallize in a monoclinic<i>P</i>2<sub>1</sub><i>/a</i>symmetry. It shows a glassy freezing at<i>T</i><sub>f</sub>∼22 K, characterized by the observation of bifurcation between ZFC and FC<i>χ</i>(T) curves, frequency dispersion across<i>T</i><sub>f</sub>in ac susceptibility, and follows Vogel-Fulcher and power law type critical dynamics, very slow relaxation of iso-thermal remanent magnetization with time and a linear temperature dependence of magnetic contribution to specific heat<i>C</i><sub>m</sub>below<i>T</i><sub>f</sub>. The microscopic neutron diffraction analysis of CFTO not only confirms the absence of long-range antiferromagnetic (AFM) ordering but also exhibits diffuse scattering due to the presence of short-range ordered AFM correlated spin clusters.
Authors
- Soumendra Nath Panja (ORCID: https://orcid.org/0000-0003-0706-1722)
- L. Keller (ORCID: https://orcid.org/0000-0002-8492-4117)
- Arun Kumar (ORCID: https://orcid.org/0000-0002-5132-1950)
- Sunil Nair (ORCID: https://orcid.org/0000-0002-0723-1472)
Institutions
- Indian Institute of Science Education and Research Pune (IN)
- Paul Scherrer Institute (CH)
Publication Details
- Journal
- Journal of Physics Condensed Matter
- Published
- 2024-09-13
- DOI
- https://doi.org/10.1088/1361-648x/ad7ac7
- Citations
- 1
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.31
Funders
- Asian Office of Aerospace Research and Development
- Science and Engineering Research Board