Revealing a room temperature ferromagnetism in cadmium oxide nanoparticles: An experimental and first-principles study

Handle URI:
http://hdl.handle.net/10754/347342
Title:
Revealing a room temperature ferromagnetism in cadmium oxide nanoparticles: An experimental and first-principles study
Authors:
Bououdina, Mohamed; Dakhel, A; El-Hilo, : Mohammad; Anjum, Dalaver H.; Kanoun, Mohammed Benali; Goumri-Said, Souraya
Abstract:
We obtain a single cadmium oxide phase from powder synthesized by a thermal decomposition method of cadmium acetate dehydrate. The yielded powder is annealed in air, vacuum, and H<inf>2</inf> gas in order to create point defects. Magnetization-field curves reveal the appearance of diamagnetic behavior with a ferromagnetic component for all the powders. Powder annealing under vacuum and H<inf>2</inf> atmosphere leads to a saturation magnetization 1.15 memu g-1 and 1.2 memu g-1 respectively with an increase by 45% and 16% compared to the one annealed in air. We show that annealing in vacuum produces mainly oxygen vacancies while annealing in H<inf>2</inf> gas creates mainly Cd vacancy leading to room temperature ferromagnetic (RTFM) component together with known diamagnetic properties. Ab initio calculations performed on the CdO nanoparticles show that the magnetism is governed by polarized hybrid states of the Cd d and O p orbitals together with the vacancy. © The Royal Society of Chemistry 2015.
KAUST Department:
Advanced Nanofabrication, Imaging and Characterization Core Lab
Citation:
Revealing a room temperature ferromagnetism in cadmium oxide nanoparticles: An experimental and first-principles study 2015 RSC Adv.
Publisher:
Royal Society of Chemistry
Journal:
RSC Adv.
Issue Date:
26-Mar-2015
DOI:
10.1039/C5RA03069B
Type:
Article
ISSN:
2046-2069
Additional Links:
http://pubs.rsc.org/en/Content/ArticleLanding/2015/RA/C5RA03069B
Appears in Collections:
Articles; Advanced Nanofabrication, Imaging and Characterization Core Lab

Full metadata record

DC FieldValue Language
dc.contributor.authorBououdina, Mohameden
dc.contributor.authorDakhel, Aen
dc.contributor.authorEl-Hilo, : Mohammaden
dc.contributor.authorAnjum, Dalaver H.en
dc.contributor.authorKanoun, Mohammed Benalien
dc.contributor.authorGoumri-Said, Sourayaen
dc.date.accessioned2015-03-31T06:40:46Zen
dc.date.available2015-03-31T06:40:46Zen
dc.date.issued2015-03-26en
dc.identifier.citationRevealing a room temperature ferromagnetism in cadmium oxide nanoparticles: An experimental and first-principles study 2015 RSC Adv.en
dc.identifier.issn2046-2069en
dc.identifier.doi10.1039/C5RA03069Ben
dc.identifier.urihttp://hdl.handle.net/10754/347342en
dc.description.abstractWe obtain a single cadmium oxide phase from powder synthesized by a thermal decomposition method of cadmium acetate dehydrate. The yielded powder is annealed in air, vacuum, and H<inf>2</inf> gas in order to create point defects. Magnetization-field curves reveal the appearance of diamagnetic behavior with a ferromagnetic component for all the powders. Powder annealing under vacuum and H<inf>2</inf> atmosphere leads to a saturation magnetization 1.15 memu g-1 and 1.2 memu g-1 respectively with an increase by 45% and 16% compared to the one annealed in air. We show that annealing in vacuum produces mainly oxygen vacancies while annealing in H<inf>2</inf> gas creates mainly Cd vacancy leading to room temperature ferromagnetic (RTFM) component together with known diamagnetic properties. Ab initio calculations performed on the CdO nanoparticles show that the magnetism is governed by polarized hybrid states of the Cd d and O p orbitals together with the vacancy. © The Royal Society of Chemistry 2015.en
dc.publisherRoyal Society of Chemistryen
dc.relation.urlhttp://pubs.rsc.org/en/Content/ArticleLanding/2015/RA/C5RA03069Ben
dc.rightsArchived with thanks to RSC Adv. © Royal Society of Chemistry 2015en
dc.titleRevealing a room temperature ferromagnetism in cadmium oxide nanoparticles: An experimental and first-principles studyen
dc.typeArticleen
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.identifier.journalRSC Adv.en
dc.eprint.versionPost-printen
dc.contributor.institutionDepartment of Physics, College of Science, University of Bahrain, P.O. Box 32038, Kingdom of Bahrainen
dc.contributor.institutionNanotechnology Centre, University of Bahrain, P.O. Box 32038, Kingdom of Bahrainen
dc.contributor.institutionSchool of Physics, Georgia Institute of Technology Atlanta, Georgia 30332-0400, USAen
dc.contributor.institutionSchool of Chemistry and Biochemistry and Center for Organic Photonics and Electronics Georgia Institute of Technology Atlanta, Georgia 30332-0400, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorAnjum, Dalaver H.en
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