000048376 001__ 48376
000048376 005__ 20200221144148.0
000048376 0247_ $$2doi$$a10.1103/PhysRevB.93.064420
000048376 0248_ $$2sideral$$a94076
000048376 037__ $$aART-2016-94076
000048376 041__ $$aeng
000048376 100__ $$0(orcid)0000-0003-3567-7030$$aPalacios, E.$$uUniversidad de Zaragoza
000048376 245__ $$aEffect of Gd polarization on the large magnetocaloric effect of GdCrO4 in a broad temperature range
000048376 260__ $$c2016
000048376 5060_ $$aAccess copy available to the general public$$fUnrestricted
000048376 5203_ $$aThe ferromagnetic zircon-type phase of GdCrO4 presents high values for the magnetocaloric (MC) parameters. This compound has large isothermal entropy changes ¿ST under the magnetic field action in a wide temperature range, from 5 to 35 K, reaching a maximum |¿ST|=29.0±0.1J/kgK at 22 K, for a field increment ¿B=9 T. It orders ferromagnetically at TC=21.3K via the Cr-Cr exchange interaction and shows a second transition at 4.8 K due to the ordering of the Gd sublattice. The large MC effect is enhanced by the polarization of the Gd3+ ions by the Cr5+ ones via a weaker Gd-Cr interaction. This effect is an interesting feature to be considered in the search for new compounds with a high MC effect in the range of liquid hydrogen or natural gas, regarding the liquefaction of gases by magnetization-demagnetization cycles. This paper contains experimental measurements of magnetization, heat capacity, and direct determinations of the MC effect. The magnetic contribution to the heat capacity Cm has been obtained after subtracting the lattice component. Approximate values for the exchange constants J1 (Cr-Cr) and J3 (Gd-Cr) have been deduced from Cm.
000048376 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/MAT2013-44063-R$$9info:eu-repo/grantAgreement/ES/DGA/E100
000048376 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000048376 592__ $$a0.0$$b2016
000048376 593__ $$aElectronic, Optical and Magnetic Materials$$c2016
000048376 593__ $$aCondensed Matter Physics$$c2016
000048376 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000048376 700__ $$aTomasi, C.
000048376 700__ $$aSáez-Puche, R.
000048376 700__ $$aDos Santos-García, A.J.
000048376 700__ $$aFernández-Martínez, F.
000048376 700__ $$0(orcid)0000-0003-2962-9251$$aBurriel, R.$$uUniversidad de Zaragoza
000048376 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDpto. Física Materia Condensa.$$cÁrea Física Materia Condensada
000048376 773__ $$g93, 6 (2016), 064420 [8 pp]$$pPhys. Rev. B$$tPhysical Review B$$x2469-9950
000048376 8564_ $$s646444$$uhttps://zaguan.unizar.es/record/48376/files/texto_completo.pdf$$yVersión publicada
000048376 8564_ $$s134863$$uhttps://zaguan.unizar.es/record/48376/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000048376 909CO $$ooai:zaguan.unizar.es:48376$$particulos$$pdriver
000048376 951__ $$a2020-02-21-13:07:11
000048376 980__ $$aARTICLE