doi:10.1103/PhysRevB.102.174416engMarcano, N.Algarabel, P.A.Fernández, J.R.Araujo, J.P.Pereira, A.M.Belo, J.H.Magén, C.Morellón, L.Ibarra, M.R.Pressure dependence of the Griffiths-like phase in 5:4 intermetallicsART-2020-121196We 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.2020http://zaguan.unizar.es/record/9710810.1103/PhysRevB.102.174416http://zaguan.unizar.es/record/97108oai:zaguan.unizar.es:97108info:eu-repo/grantAgreement/ES/DGA/E28-20Rinfo:eu-repo/grantAgreement/ES/MCIU/MAT2017-82970-C2-2-RPHYSICAL REVIEW B 102, 17 (2020), 174416 [8 pp]All rights reservedhttp://www.europeana.eu/rights/rr-f/info:eu-repo/semantics/openAccess