97108 20210902121835.0 doi 10.1103/PhysRevB.102.174416 sideral 121196 ART-2020-121196 eng Marcano, N. Universidad de Zaragoza (orcid)0000-0002-5331-9758 Pressure dependence of the Griffiths-like phase in 5:4 intermetallics 2020 Access copy available to the general public Unrestricted We report a study of the effect of hydrostatic pressure (P) on the Griffiths-like phase in selected compounds of the R5(SixGe1-x)4 family of alloys (Tb4.925La0.075Si2Ge2 and Gd5Ge4) which present either the Gd5Si2Ge2-type (monoclinic, M) or the Sm5Ge4-type [orthorhombic-II, O(II)] structural phases at room temperature. The downward deviation in the inverse low-field dc susceptibility ¿dc-1 from the Curie-Weiss law below a characteristic temperature TG indicates that the Griffiths-like phase exists at pressures up to 10 kbar. From the obtained T-P phase diagrams, the pressure coefficient of the Griffiths-like temperature, dTG/dP, has been determined. These results are compared with those obtained in Dy5Si3Ge in a previous work. The dTG/dP coefficient is strongly dependent on the nature (first or second order) of the long-range order (FM or AFM) transition. This effect can be ascribed to a different structural character of the clusters within the Griffiths phase. A ratio of ~0.5 between the dTG/dP and the pressure coefficient of long-range magnetic ordering temperatures, dTC, N/dP (TC, ferromagnetic; TN, antiferromagnetic), is found in all the studied compounds. info:eu-repo/grantAgreement/ES/DGA/E28-20R info:eu-repo/grantAgreement/ES/MCIU/MAT2017-82970-C2-2-R info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.036 2020 MATERIALS SCIENCE, MULTIDISCIPLINARY 130 / 333 = 0.39 2020 Q2 T2 PHYSICS, CONDENSED MATTER 22 / 69 = 0.319 2020 Q2 T1 PHYSICS, APPLIED 41 / 160 = 0.256 2020 Q2 T1 1.78 2020 Electronic, Optical and Magnetic Materials 2020 Q1 Condensed Matter Physics 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Algarabel, P.A. Universidad de Zaragoza (orcid)0000-0002-4698-3378 Fernández, J.R. Araujo, J.P. Pereira, A.M. Belo, J.H. Magén, C. Universidad de Zaragoza (orcid)0000-0002-6761-6171 Morellón, L. Universidad de Zaragoza (orcid)0000-0003-3724-508X Ibarra, M.R. Universidad de Zaragoza (orcid)0000-0003-0681-8260 2003 395 Universidad de Zaragoza Dpto. Física Materia Condensa. Área Física Materia Condensada 102, 17 (2020), 174416 [8 pp] Phys. Rev. B PHYSICAL REVIEW B 2469-9950 1405378 http://zaguan.unizar.es/record/97108/files/texto_completo.pdf Versión publicada 617221 http://zaguan.unizar.es/record/97108/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:97108 articulos driver 2021-09-02-10:19:42 ARTICLE