Kotnana, Ganesh and Babu, P. D. and Jammalamadaka, S Narayana
(2022)
Metamagnetic Transitions and Magnetocaloric Properties of HoCr1-xFexO3 (x = 0.25 and 0.75) Compounds.
Journal of Superconductivity and Novel Magnetism, 35 (7).
pp. 2057-2067.
ISSN 1557-1939
Full text not available from this repository.
(
Request a copy)
Abstract
We report on the magnetocaloric properties of HoCr1-xFexO3 (x = 0.25 and 0.75) compounds studied by magnetic and specific heat measurements. The magnetic entropy change (–ΔSM) reaches a maximum value of 10.32 J/kg-K and 10.94 J/kg-K around 11 K with a maximum magnetic field of 9 T in HoCr0.75Fe0.25O3 and HoCr0.25Fe0.75O3 compounds respectively. The corresponding adiabatic temperature change (ΔTad) values are found to be 13.7 K and 18.5 K with a maximum magnetic field of 7 T from the specific heat studies. The origin for the obtained large values of –ΔSM and ΔTad are attributed to the evidenced metamagnetic transition and Ho3+ ordering. The evidenced Schottky anomaly below 15 K in the specific heat data is ascribed to crystal field splitting of 5I8 levels of Ho3+ paramagnetic ions. The Debye temperatures and splitting energy of Ho3+ ground state levels have been evaluated by fitting the specific heat data. The present results suggest that HoCr1-xFexO3 (x = 0.25 and 0.75) compounds could be promising candidates for the refrigeration applications below 30 K. © 2022, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
[error in script]
IITH Creators: |
IITH Creators | ORCiD |
---|
Jammalamadaka, S Narayana | https://orcid.org/0000-0001-9235-7012 |
|
Item Type: |
Article
|
Additional Information: |
We would like to acknowledge the Indian Institute of Technology, Hyderabad and Department of Science and Technology (DST) ( Project #SR/FTP/PS-190/2012 ) for the financial support. We are also grateful to UGC-DAE Consortium Indore (Project # CSR-IC/CRS-162/2015–16/19) and UGC – DAE consortium Mumbai (UDCSR/MUM/AO/CRS-M-269/2020) for the financial support and their extended facilities. |
Uncontrolled Keywords: |
Entropy; Magnetism; Magnetocaloric effect; Specific heat |
Subjects: |
Physics |
Divisions: |
Department of Physics |
Depositing User: |
. LibTrainee 2021
|
Date Deposited: |
22 Jul 2022 09:22 |
Last Modified: |
22 Jul 2022 09:22 |
URI: |
http://raiithold.iith.ac.in/id/eprint/9864 |
Publisher URL: |
http://doi.org/10.1007/s10948-022-06225-5 |
OA policy: |
https://v2.sherpa.ac.uk/id/publication/14419 |
Related URLs: |
|
Actions (login required)
![View Item View Item](/style/images/action_view.png) |
View Item |