University of Wollongong
Browse

Multifunctionality from coexistence of large magnetoresistance and magnetocaloric effect in La0.7Ca0.3MnO3

Download (326.83 kB)
conference contribution
posted on 2024-11-14, 09:08 authored by J C Debnath, Rong Zeng, Jung Ho KimJung Ho Kim, Shi DouShi Dou
We report the existence of multifunctionality involving large magnetoresistance (MR) and magnetocaloric effect (MCE) near room temperature in La0.7Ca0.3MnO3. A peak in the temperature dependence of the magnetoresistance and a change in the magnetic entropy (ΔSM) are observed at 251 K, with a maximum magnetoresistance MR (defined as ρ(0)∕ρ(H)−1) of about 206% and a maximum ΔSM of approximately 7.54 J∕kgK, at a field of 5 T, where the Curie temperature (TC) and metal‐insulator transition coexist at 251 K. The magnetic entropy change is measured on the basis of resistive measurements, which are close to the values obtained from the M‐H curves in the intermediate temperature region, as well as close to TC. The large MR and large MCE suggest that the material is interesting for multiple applications.

History

Citation

Debnath, J. C., Zeng, R., Kim, J. H. Dou, S. X. (2011). Multifunctionality from coexistence of large magnetoresistance and magnetocaloric effect in La0.7Ca0.3MnO3. International Conference on Magnetic Materials, ICMM-2010 (pp. 278-281). Australia: American Institute of Physics.

Parent title

AIP Conference Proceedings

Volume

1347

Pagination

278-281

Language

English

RIS ID

38213

Usage metrics

    Categories

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC