000063279 001__ 63279
000063279 005__ 20171129112116.0
000063279 0247_ $$2doi$$a10.1038/ncomms6321
000063279 0248_ $$2sideral$$a97201
000063279 037__ $$aART-2014-97201
000063279 041__ $$aeng
000063279 100__ $$aSharples, Joseph W.
000063279 245__ $$aQuantum signatures of a molecular nanomagnet in direct magnetocaloric measurements
000063279 260__ $$c2014
000063279 5060_ $$aAccess copy available to the general public$$fUnrestricted
000063279 5203_ $$aGeometric spin frustration in low-dimensional materials, such as the two-dimensional kagome or triangular antiferromagnetic nets, can significantly enhance the change of the magnetic entropy and adiabatic temperature following a change in the applied magnetic field, that is, the magnetocaloric effect. In principle, an equivalent outcome should also be observable in certain high-symmetry zero-dimensional, that is, molecular, structures with frustrated topologies. Here we report experimental realization of this in a heptametallic gadolinium molecule. Adiabatic demagnetization experiments reach B200 mK, the first sub-Kelvin cooling with any molecular nanomagnet, and reveal isentropes (the constant entropy paths followed in the temperature-field plane) with a rich structure. The latter is shown to be a direct manifestation of the trigonal antiferromagnetic net structure, allowing study of frustration-enhanced magnetocaloric effects in a finite system.
000063279 536__ $$9info:eu-repo/grantAgreement/ES/MINECO/MAT2012-38318-C03-01$$9info:eu-repo/grantAgreement/ES/MINECO/MAT2013-44063-R
000063279 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000063279 590__ $$a11.47$$b2014
000063279 591__ $$aMULTIDISCIPLINARY SCIENCES$$b3 / 57 = 0.053$$c2014$$dQ1$$eT1
000063279 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000063279 700__ $$aCollison, David
000063279 700__ $$aMcInnes, Eric J. L.
000063279 700__ $$aSchnack, Juergen
000063279 700__ $$0(orcid)0000-0003-3567-7030$$aPalacios, Elias$$uUniversidad de Zaragoza
000063279 700__ $$0(orcid)0000-0002-8028-9064$$aEvangelisti, Marco$$uUniversidad de Zaragoza
000063279 7102_ $$12003$$2395$$aUniversidad de Zaragoza$$bDepartamento de Física de la Materia Condensada$$cFísica de la Materia Condensada
000063279 773__ $$g5 (2014), 5321 [6 pp]$$pNATURE COMMUNICATIONS$$tNATURE COMMUNICATIONS$$x2041-1723
000063279 8564_ $$s1402228$$uhttps://zaguan.unizar.es/record/63279/files/texto_completo.pdf$$yVersión publicada
000063279 8564_ $$s57897$$uhttps://zaguan.unizar.es/record/63279/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000063279 909CO $$ooai:zaguan.unizar.es:63279$$particulos$$pdriver
000063279 951__ $$a2017-11-28-12:45:16
000063279 980__ $$aARTICLE