{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T04:34:31Z","timestamp":1768883671605,"version":"3.49.0"},"reference-count":27,"publisher":"AIP Publishing","issue":"13","funder":[{"DOI":"10.13039\/501100004837","name":"Spanish Ministry of Science and Innovation","doi-asserted-by":"crossref","award":["MAT2008-06567-C02"],"award-info":[{"award-number":["MAT2008-06567-C02"]}],"id":[{"id":"10.13039\/501100004837","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2013,4,7]]},"abstract":"<jats:p>An extensive investigation on the magnetism of Gd5(SixGe1\u2212x)4 compounds which stabilize in the Gd5Si4-type structure is here presented, focusing on the Gd5Si4 and Gd5Si2Ge2 compositions. Through Arrott plot analysis, the temperature dependencies of the spontaneous magnetizations are retrieved and the magnetic interaction coefficients (Jexch) are estimated. The obtained Jexch value for Gd5Si4 is 15% higher than that of Gd5Si2Ge2. Such enhancement cannot be attributed to a magneto-volume coupling only, being mainly associated with the magnetic polarization of the (Si,Ge)-(Si,Ge) interslab connections. The critical exponents were estimated (\u03b4=3.1 and 2.9, \u03b3=1.01 and 1.06,\u2009\u03b2=0.48 and 0.56, and n=0.67 and 0.63 for Gd5Si4 and Gd5Si2Ge2, respectively) demonstrating that both compositions belong to the same universal class. This conclusion is reinforced by the construction of a universal logarithmic scaling plot of the M(H) isothermal curves. Hence, we conclude that the magnetism of the Gd5Si4-type structure compounds is simply dominated by long range ferromagnetic interactions. This contrasts to other Gd5(SixGe1\u2212x)4 compositions where a strong competition antiferro versus ferromagnetic interactions and short versus long range order are observed. Finally, the Gd5Si4 composition has shown a reduction of 50% on the magnetic entropy change maxima when compared with the Gd5Si2Ge2 compound studied, despite its higher magnetic interaction coefficient value.<\/jats:p>","DOI":"10.1063\/1.4798578","type":"journal-article","created":{"date-parts":[[2013,4,5]],"date-time":"2013-04-05T23:08:02Z","timestamp":1365203282000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":18,"title":["Critical magnetic behavior of magnetocaloric materials with the Gd5Si4-type structure"],"prefix":"10.1063","volume":"113","author":[{"given":"J. H.","family":"Belo","sequence":"first","affiliation":[{"name":"IFIMUP and IN-Institute of Nanoscience and Nanotechnology, Departamento de F\u00edsica e Astronomia da Faculdade de Ci\u00eancias da Universidade do Porto 1 , Rua do Campo Alegre, 687, 4169-007 Porto, Portugal"}]},{"given":"A. M.","family":"Pereira","sequence":"additional","affiliation":[{"name":"IFIMUP and IN-Institute of Nanoscience and Nanotechnology, Departamento de F\u00edsica e Astronomia da Faculdade de Ci\u00eancias da Universidade do Porto 1 , Rua do Campo Alegre, 687, 4169-007 Porto, Portugal"},{"name":"Blackett Laboratory 2 , Imperial College, London SW7 2AZ, United Kingdom"}]},{"given":"C.","family":"Magen","sequence":"additional","affiliation":[{"name":"Instituto de Nanociencia de Arag\u00f3n-ARAID, Universidad de Zaragoza 3 , 50009 Zaragoza, Spain"},{"name":"Departamento de F\u00edsica de la Materia Condensada, Universidade de Zaragoza 4 , Spain"}]},{"given":"L.","family":"Morellon","sequence":"additional","affiliation":[{"name":"Instituto de Nanociencia de Arag\u00f3n-ARAID, Universidad de Zaragoza 3 , 50009 Zaragoza, Spain"},{"name":"Departamento de F\u00edsica de la Materia Condensada, Universidade de Zaragoza 4 , Spain"}]},{"given":"M. R.","family":"Ibarra","sequence":"additional","affiliation":[{"name":"Instituto de Nanociencia de Arag\u00f3n-ARAID, Universidad de Zaragoza 3 , 50009 Zaragoza, Spain"},{"name":"Departamento de F\u00edsica de la Materia Condensada, Universidade de Zaragoza 4 , Spain"}]},{"given":"P. A.","family":"Algarabel","sequence":"additional","affiliation":[{"name":"Instituto de Ciencia de Materiales de Arag\u00f3n, Universidad de Zaragoza and Consejo Superior de Investigaciones Cient\u00edficas 5 , 50009 Zaragoza, Spain"},{"name":"Departamento de F\u00edsica de la Materia Condensada, Universidade de Zaragoza 4 , Spain"}]},{"given":"J. P.","family":"Ara\u00fajo","sequence":"additional","affiliation":[{"name":"IFIMUP and IN-Institute of Nanoscience and Nanotechnology, Departamento de F\u00edsica e Astronomia da Faculdade de Ci\u00eancias da Universidade do Porto 1 , Rua do Campo Alegre, 687, 4169-007 Porto, Portugal"}]}],"member":"317","published-online":{"date-parts":[[2013,4,4]]},"reference":[{"issue":"9","key":"2023070422531025700_c1","doi-asserted-by":"publisher","first-page":"683","DOI":"10.1002\/1521-4095(200105)13:9&lt;683::AID-ADMA683&gt;3.0.CO;2-O","volume":"13","year":"2001","journal-title":"Adv. Mater."},{"issue":"23","key":"2023070422531025700_c2","doi-asserted-by":"publisher","first-page":"4494","DOI":"10.1103\/PhysRevLett.78.4494","volume":"78","year":"1997","journal-title":"Phys. Rev. Lett."},{"key":"2023070422531025700_c3","doi-asserted-by":"publisher","first-page":"1864","DOI":"10.1021\/ja01407a003","volume":"49","year":"1927","journal-title":"J. Am. Chem. 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