Magnetocaloric effect observations near room temperature in few-layered chromium telluride (Cr2Te3)
- Indian Institute of Technology Kharagpur, West Bengal (India)
- Indian Institute of Science, Karnataka (India)
- Indian Institute of Technology Gandhinagar, Gujarat (India)
- Southern Illinois University, Carbondale, IL (United States)
- Chalmers University of Technology, Gothenburg (Sweden)
Transition metal telluride compositions are explored extensively for their unique magnetic behavior. Few-layered chromium telluride (Cr2Te3) exhibits a near-room-temperature phase transition, where the material can be effectively used in applications such as magnetic refrigeration. Compared to existing magnetocaloric materials, Heusler alloys, and rare-earth-based alloys, the large-scale synthesis of mechanically exfoliated Cr2Te3 involves less complexity, resulting in a stable composition. Compared to existing tellurides, Cr2Te3 exhibited a large change in magnetic entropy (|ΔSM|) of 1.88 J kg−1 K−1 at a magnetic field of 4 T. A refrigeration capacity (RC) of ∼82 J kg−1 was determined from the change in magnetic entropy versus temperature curve. The results were comparable with those for existing Cr-based compounds. First-principles density functional theory (DFT) confirmed the magnetic properties of Cr2Te3, including a near-room-temperature Curie temperature, TC, consistent with experimental results. Here, structural transition was also observed using first-principles DFT, which is responsible for the magnetic behavior.
- Research Organization:
- Southern Illinois University, Carbondale, IL (United States)
- Sponsoring Organization:
- Asian Office of Aerospace Research and Development (AOARD); USDOE
- Grant/Contract Number:
- FG02-06ER46291
- Other Award/Contract Number:
- FA2386-21-1-4014
- OSTI ID:
- 3021128
- Journal Information:
- Nanoscale, Journal Name: Nanoscale Journal Issue: 4 Vol. 18; ISSN 2040-3364; ISSN 2040-3372
- Publisher:
- Royal Society of Chemistry (RSC)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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