{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T09:00:57Z","timestamp":1760346057478,"version":"3.41.2"},"reference-count":42,"publisher":"AIP Publishing","issue":"1","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2009,1,1]]},"abstract":"<jats:p>An investigation of the effect of interparticle interaction and particle size distribution has been carried out on iron oxide nanoparticles dispersed into porous Vycor glass. \u03b3-Fe2O3 nanoparticles dispersed into monoliths of Vycor glass were obtained using impregnation-decomposition cycles through the single-source metallo-organic decomposition process. Magnetic properties were investigated by ac magnetic susceptibility measurements, as a function of temperature at different frequencies, by measuring zero-field-cooled and field-cooled magnetization curves and by constructing hysteresis loops at different temperatures. A log-normal size distribution of monodomain nanoparticles has been deduced from the analysis of the magnetization curves. F57e M\u00f6ssbauer spectroscopy was also employed for investigating the magnetic behavior as a function of nanoparticle size. The systems exhibit typical superparamagnetic behaviors with a wide particle size distribution that can be changed without significantly affecting the interparticle interaction. The experimental data are discussed in terms of the evolution of the particle size distribution with the number of impregnation-decomposition cycles used for preparing the nanoparticles.<\/jats:p>","DOI":"10.1063\/1.3054173","type":"journal-article","created":{"date-parts":[[2009,1,7]],"date-time":"2009-01-07T15:48:34Z","timestamp":1231343314000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":19,"title":["\u03b3\n                    -Fe\n                  2\n                  O\n                  3\n           nanoparticles dispersed in porous Vycor glass: A magnetically diluted integrated system"],"prefix":"10.1063","volume":"105","author":[{"given":"Danielle","family":"Cangussu","sequence":"first","affiliation":[{"name":"Universidade Estadual de Campinas-UNICAMP 1 Laborat\u00f3rio de Qu\u00edmica do Estado S\u00f3lido, Instituto de Qu\u00edmica, , Campinas, P.O. Box 6154, 13083-970, S\u00e3o Paulo, Brazil"}]},{"given":"Wallace Castro","family":"Nunes","sequence":"additional","affiliation":[{"name":"Universidade de Lisboa 2 Departamento de F\u00edsica, Centro de F\u00edsica da Mat\u00e9ria Condensada, , 1749-016, Lisboa, Portugal"}]},{"given":"Heberton Luis da Silva","family":"Corr\u00eaa","sequence":"additional","affiliation":[{"name":"Centro de Desenvolvimento da Tecnologia Nuclear 3 Laborat\u00f3rio de F\u00edsica Aplicada, , Belo Horizonte, Minas Gerais, 31270-901, Brazil"}]},{"given":"Waldemar Augusto de Almeida","family":"Macedo","sequence":"additional","affiliation":[{"name":"Centro de Desenvolvimento da Tecnologia Nuclear 3 Laborat\u00f3rio de F\u00edsica Aplicada, , Belo Horizonte, Minas Gerais, 31270-901, Brazil"}]},{"given":"Marcelo","family":"Knobel","sequence":"additional","affiliation":[{"name":"Universidade Estadual de Campinas-UNICAMP 4 Departamento de F\u00edsica da Mat\u00e9ria Condensada, Instituto de F\u00edsica Gleb Wataghin, , Campinas, P.O. Box 6165, 13083-970, S\u00e3o Paulo, Brazil"}]},{"given":"Oswaldo Luiz","family":"Alves","sequence":"additional","affiliation":[{"name":"Universidade Estadual de Campinas-UNICAMP 1 Laborat\u00f3rio de Qu\u00edmica do Estado S\u00f3lido, Instituto de Qu\u00edmica, , Campinas, P.O. Box 6154, 13083-970, S\u00e3o Paulo, Brazil"}]},{"given":"Ant\u00f4nio Gomes Souza","family":"Filho","sequence":"additional","affiliation":[{"name":"Universidade Federal do Cear\u00e1 5 Departamento de F\u00edsica, , P.O. Box 6030, 60450-900, Fortaleza, Cear\u00e1, Brazil"}]},{"given":"Italo Odone","family":"Mazali","sequence":"additional","affiliation":[{"name":"Universidade Estadual de Campinas-UNICAMP 1 Laborat\u00f3rio de Qu\u00edmica do Estado S\u00f3lido, Instituto de Qu\u00edmica, , Campinas, P.O. 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