000061332 001__ 61332 000061332 005__ 20170519135025.0 000061332 0247_ $$2doi$$a10.1103/PhysRevB.84.134409 000061332 0248_ $$2sideral$$a78777 000061332 037__ $$aART-2011-78777 000061332 041__ $$aeng 000061332 100__ $$aWu, L.S. 000061332 245__ $$aMagnetic field Tuning of antiferromagnetic Yb3Pt4 000061332 260__ $$c2011 000061332 5060_ $$aAccess copy available to the general public$$fUnrestricted 000061332 5203_ $$aWe present measurements of the specific heat, magnetization, magnetocaloric effect, and magnetic neutron diffraction carried out on single crystals of antiferromagnetic Yb3Pt4, where highly localized Yb moments order at TN=2.4 K in zero field. The antiferromagnetic order was suppressed to TN¿0 by applying a field of 1.85 T in the ab plane. Magnetocaloric effect measurements show that the antiferromagnetic phase transition is always continuous for TN>0, although a pronounced step in the magnetization is observed at the critical field in both neutron diffraction and magnetization measurements. These steps sharpen with decreasing temperature, but the related divergences in the magnetic susceptibility are cut off at the lowest temperatures, where the phase line itself becomes vertical in the field-temperature plane. As TN¿0, the antiferromagnetic transition is increasingly influenced by a quantum critical end point, where TN ultimately vanishes in a first-order phase transition. 000061332 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000061332 590__ $$a3.691$$b2011 000061332 591__ $$aPHYSICS, CONDENSED MATTER$$b13 / 68 = 0.191$$c2011$$dQ1$$eT1 000061332 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000061332 700__ $$aJanssen, Y. 000061332 700__ $$aMarques, V 000061332 700__ $$aBennett, M.C. 000061332 700__ $$aKim, M.S. 000061332 700__ $$aPark, K.S. 000061332 700__ $$aChi, S.X. 000061332 700__ $$aLyn, J.W. 000061332 700__ $$0(orcid)0000-0002-4078-6808$$aLorusso, G. 000061332 700__ $$aBiasiol, G. 000061332 700__ $$aAronson, M.C. 000061332 773__ $$g84 (2011), 134409 [9 pp$$pPhys. Rev. B, Condens. matter mater. phys.$$tPhysical Review B. Condensed matter and materials physics$$x1098-0121 000061332 8564_ $$s740959$$uhttps://zaguan.unizar.es/record/61332/files/texto_completo.pdf$$yVersión publicada 000061332 8564_ $$s139812$$uhttps://zaguan.unizar.es/record/61332/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000061332 909CO $$ooai:zaguan.unizar.es:61332$$particulos$$pdriver 000061332 951__ $$a2017-05-19-13:16:45 000061332 980__ $$aARTICLE