Study of mechanical alloying of Sm and Fe

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dc.contributorVirginia Tech. Department of Materials Science and Engineeringen
dc.contributorMorgan State University. Department of Physicsen
dc.contributorWest Virginia University. Department of Physicsen
dc.contributorHoward University. Department of Physicsen
dc.contributor.authorSeifu, Derejeen
dc.contributor.authorOliver, Frederick W.en
dc.contributor.authorHoffman, Eugene J.en
dc.contributor.authorAning, Alex O.en
dc.contributor.authorBabu, V. Sureshen
dc.contributor.authorSeehra, Mohindar S.en
dc.contributor.authorCatchings, Robert M.en
dc.contributor.departmentMaterials Science and Engineering (MSE)en
dc.date.accessed2015-04-24en
dc.date.accessioned2015-05-21T19:47:31Zen
dc.date.available2015-05-21T19:47:31Zen
dc.date.issued1997-04-15en
dc.description.abstractMechanical alloying of Sm and Fe with the composition of SmFe3 was studied using x-ray-diffraction (XRD), Mossbauer, and magnetization measurements. Data taken as a function of milling time for up to 20 h show significant changes occurring during ball milling. The XRD studies show that the initial crystalline Bragg reflections changed to a broad maximum, which is attributed to the formation of an amorphous phase. The initial six-line pattern in the Mossbauer spectrum, characteristic of magnetic ordering, changed to a broad singlet, characteristic of a nonmagnetic material. Magnetization measurements revealed that the coercive field was at its maximum after 5 h of milling and decreased sharply as the milling time increased. The remanent magnetization was at its maximum between 5 and 10 h of milling. The final product of the ball milling, which exhibited the characteristics of an amorphous paramagnetic material in its XRD and Mossbauer spectrum, was studied after heat treatment. The XRD and the Mossbauer spectra of the heat treated alloy show that substantial changes occurred during heat treatment in that sharp Bragg reflections, characteristic of crystalline materials, reappear and the alloy changed from a paramagnetic to a ferromagnetic state. (C) 1997 American Institute of Physics.en
dc.format.extent4 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSeifu, D., Oliver, F. W., Hoffman, E., Aning, A., Babu, V. S., Seehra, M. S., Catchings, R. M. (1997). Study of mechanical alloying of Sm and Fe. Journal of Applied Physics, 81(8), 5805-5807. doi: 10.1063/1.364674en
dc.identifier.doihttps://doi.org/10.1063/1.364674en
dc.identifier.issn0021-8979en
dc.identifier.urihttp://hdl.handle.net/10919/52476en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/jap/81/8/10.1063/1.364674en
dc.language.isoen_USen
dc.publisherAmerican Institute of Physicsen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectMaterials propertiesen
dc.subjectMillingen
dc.subjectSpectral propertiesen
dc.subjectX-ray diffractionen
dc.subjectHeat treatmentsen
dc.titleStudy of mechanical alloying of Sm and Feen
dc.title.serialJournal of Applied Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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