Please use this identifier to cite or link to this item:
Title: Correlation between magnetoresistivity and magnetic entropy change in the 3D-Heisenberg ferromagnet CuCr2Te4
Authors: Tripathi, T.S.
Mahendiran, R. 
Rastogi, A.K.
Issue Date: 21-Jun-2013
Citation: Tripathi, T.S., Mahendiran, R., Rastogi, A.K. (2013-06-21). Correlation between magnetoresistivity and magnetic entropy change in the 3D-Heisenberg ferromagnet CuCr2Te4. Journal of Applied Physics 113 (23) : -. ScholarBank@NUS Repository.
Abstract: We report a correlation between magnetoresistivity [Δρ mag = ρmag(H,T) - ρmag(0,T)] and magnetic entropy change [ΔSM = SM(H,T) - S M(0,T)] in the metallic spinel CuCr2Te4 which orders ferromagnetically below TC = 320 K. We find that Δρmag = KΔSM for several temperatures around TC with a temperature independent K, which suggests that magnetoresistivity arising from the suppression of spin disorder scattering scales with ΔSM. However, unlike expected theoretically, a clear correlation is not obtained between Δρmag and square of the reduced magnetization (M/Msat)2, where M sat is saturation magnetization at 0 K. A maximum magnetoresistance of -3.56% for μ0ΔH = 5 T and magnetic entropy change of -1.57 J/kg K occur at TC, which are typical values for itinerant ferromagnets. Critical exponent analysis using modified Arrott plots yield β = 0.371 ± 0.005 and γ = 1.312 ± 0.02 that are close to the 3D-Heisenberg (β = 0.365, γ = 1.336, and δ = 4.66) model. © 2013 AIP Publishing LLC.
Source Title: Journal of Applied Physics
ISSN: 00218979
DOI: 10.1063/1.4811680
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Jul 5, 2020


checked on Jun 26, 2020

Page view(s)

checked on Jun 27, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.