Magnetic and magnetocaloric properties of HoCr0.75Fe0.25O3 compound
Source abstract
Abstract
We report on the magnetic and magnetocaloric properties of HoCr0.75Fe0.25O3 compound around the Néel temperature (TN), which is due to Cr3+ ordering. Susceptibility (χ) vs. temperature (T) graph of HoCr0.75Fe0.25O3 compound infer two transitions due to the ordering of Cr3+ moments (TN ∼ 155 K) and Ho3+ moments (TNHo ∼ 8 K). Magnetic entropy (–ΔSM) value of 1.14 J kg-1 K-1 around 157.5 K with a magnetic field (H) of 90 kOe is attributed to antiferromagnetic (AFM) ordering of Cr3+ moments. A maximum value of adiabatic temperature (ΔTad) ∼ 0.41 K around TN is obtained and is found to increases with applied magnetic field. Negative slope for H/M vs. M2 graph is evident for HoCr0.75Fe0.25O3 compound below TN, which indicates the first order phase transition. Quantified values of –ΔSM and ΔTad open the way to explore rare earth orthochromites for the MCE properties and refrigeration applications.
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Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Multiferroics and related materials · Advanced Condensed Matter Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Magnetic Materials and Device Physics Laboratory, Department of Physics, Indian Institute of Technology Hyderabad 1 , Hyderabad, India , 502 285
UGC-DAE Consortium for Scientific Research, Mumbai Centre, BARC Campus 2 , Mumbai, India , 400 085
Funding
Department of Science and Technology, Ministry of Science and Technology · Department of Atomic Energy, Government of India
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