Moshnyaga, Vasily T.

[["dc.bibliographiccitation.artnumber","063034"],["dc.bibliographiccitation.journal","New Journal of Physics"],["dc.bibliographiccitation.volume","16"],["dc.contributor.author","Jungbauer, Markus"],["dc.contributor.author","Huehn, Sebastian"],["dc.contributor.author","Krisponeit, J-O"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.date.accessioned","2018-11-07T09:38:54Z"],["dc.date.available","2018-11-07T09:38:54Z"],["dc.date.issued","2014"],["dc.description.abstract","We report a colossal magnetorefractive effect (MRE) in epitaxial thin films of a classical colossal magnetoresistance (CMR) manganite, (La-1 (-) Pr-y(y))(2/3)Ca1/3MnO3 (y = 0.375 and 0.7). Close to the ferromagnetic (FM) phase transition a moderate applied magnetic field, H similar to 10 kOe, results in a reduction of the optical reflectance by similar to 18% for the photon energy E similar to 2.7 eV. The MRE spectral behavior with three pronounced maxima at E = 1.6, 2.7 and 4.0eV points out an inter-site nature of the involved optical transitions. The results are discussed within a phase separation scenario with coexisting FM metallic nanodomains antiferromagnetically coupled by correlated polarons. The probability of MRE optical transitions is maximal for antiparallel alignment of Mn3+/Mn4+-spins realized for the coercive field, H-c similar to 200-800 Oe, and is suppressed by stronger fields, which favor FM metallic behavior. As a result, both the optical reflectivity and the electrical resistance decrease, yielding a close similarity between the CMR and MRE behavior."],["dc.description.sponsorship","Open Access Publikationsfonds 2014"],["dc.identifier.doi","10.1088/1367-2630/16/6/063034"],["dc.identifier.fs","608256"],["dc.identifier.isi","000339079600004"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/10565"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/33160"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/246102/EU//IFOX"],["dc.relation","SFB 1073: Kontrolle von Energiewandlung auf atomaren Skalen"],["dc.relation","SFB 1073 | Topical Area B | B04 External field control of photon energy conversion in manganites"],["dc.relation.issn","1367-2630"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 3.0"],["dc.title","Visible range colossal magnetorefractive effect in (La-1 (-) Pr-y(y))(2/3)Ca1/3MnO3 films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","5868"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Nano Letters"],["dc.bibliographiccitation.lastpage","5874"],["dc.bibliographiccitation.volume","15"],["dc.contributor.author","O'Shea, Kerry J."],["dc.contributor.author","MacLaren, Donald A."],["dc.contributor.author","McGrouther, Damien"],["dc.contributor.author","Schwarzbach, Danny"],["dc.contributor.author","Jungbauer, Markus"],["dc.contributor.author","Huehn, Sebastian"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Stamps, Robert L."],["dc.date.accessioned","2018-11-07T09:52:25Z"],["dc.date.available","2018-11-07T09:52:25Z"],["dc.date.issued","2015"],["dc.description.abstract","Spatially resolved analysis of magnetic properties on the nanoscale remains challenging, yet strain and defects on this length-scale can profoundly affect a material's bulk performance. We present a detailed investigation of the magnetic properties of La0.67Sr0.33MnO3 thin films in both free-standing and nanowire form and assess the role of strain and local defects in modifying the films' magnetic properties. Lorentz transmission electron microscopy is used to measure the magnetocrystalline anisotropy and to map the Curie temperature and saturation magnetization with nanometric spatial resolution. Atomic-scale defects are identified as pinning sites for magnetic domain wall propagation. Measurement of domain wall widths and crystalline strain are used to identify a strong magnetoelastic contribution to the magnetic anisotropy. Together, these results provide unique insight into the relationship between the nanostructure and magnetic functionality of a ferromagnetic complex oxide film."],["dc.identifier.doi","10.1021/acs.nanolett.5b01953"],["dc.identifier.isi","000361252700031"],["dc.identifier.pmid","26252745"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/12152"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/36121"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Chemical Soc"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/246102/EU//IFOX"],["dc.relation.issn","1530-6992"],["dc.relation.issn","1530-6984"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Nanoscale Mapping of the Magnetic Properties of (111)-Oriented La0.67Sr0.33MnO3"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]