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Defect and adsorbate induced ferromagnetic spin-order in magnesium oxide nanocrystallites

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dc.contributorVirginia Techen
dc.contributor.authorKumar, Ashoken
dc.contributor.authorKumar, Jitendraen
dc.contributor.authorPriya, Shashanken
dc.contributor.departmentCenter for Energy Harvesting Materials and Systems (CEHMS)en
dc.contributor.departmentMechanical Engineeringen
dc.date.accessed2014-01-10en
dc.date.accessioned2014-01-21T19:28:04Zen
dc.date.available2014-01-21T19:28:04Zen
dc.date.issued2012-05-01en
dc.description.abstractWe report the correlation between d(0) ferromagnetism, photoluminescence (PL), and adsorbed hydrogen (H-) species in magnesium oxide (MgO) nanocrystallites. Our study suggests that the oxygen vacancies, namely singly ionized anionic vacancies (F+) and dimers (F-2(2+)) induce characteristic photoluminescence and the room-temperature ferromagnetic spin-order. Nanocrystallites with low population of oxygen vacancies have revealed diamagnetic behavior. Intriguingly, on adsorption of hydrogen (H-) species in the MgO nanocrystallites, ferromagnetic behavior was either enhanced (in the case of highly oxygen deficient nanocrystallites) or begun to percolate (in the case of nanocrystallite with low population density of oxygen vacancies). (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4712058]en
dc.description.sponsorshipOffice of Basic Energy Sciences, Department of Energy DE-FG02-08ER 46484en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKumar, Ashok; Kumar, Jitendra; Priya, Shashank, "Defect and adsorbate induced ferromagnetic spin-order in magnesium oxide nanocrystallites," Appl. Phys. Lett. 100, 192404 (2012); http://dx.doi.org/10.1063/1.4712058en
dc.identifier.doihttps://doi.org/10.1063/1.4712058en
dc.identifier.issn0003-6951en
dc.identifier.urihttp://hdl.handle.net/10919/24927en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/apl/100/19/10.1063/1.4712058en
dc.language.isoenen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectCentersen
dc.subjectMGOen
dc.subjectLuminescenceen
dc.subjectPhysicsen
dc.titleDefect and adsorbate induced ferromagnetic spin-order in magnesium oxide nanocrystallitesen
dc.title.serialApplied Physics Lettersen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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