Change search
ReferencesLink to record
Permanent link

Direct link
Disorder-induced Room Temperature Ferromagnetism in Glassy Chromites
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
Show others and affiliations
2014 (English)In: Scientific Reports, ISSN 2045-2322, Vol. 4, 4686- p.Article in journal (Refereed) Published
Abstract [en]

We report an unusual robust ferromagnetic order above room temperature upon amorphization of perovskite [YCrO3] in pulsed laser deposited thin films. This is contrary to the usual expected formation of a spin glass magnetic state in the resulting disordered structure. To understand the underlying physics of this phenomenon, we combine advanced spectroscopic techniques and first-principles calculations. We find that the observed order-disorder transformation is accompanied by an insulator-metal transition arising from a wide distribution of Cr-O-Cr bond angles and the consequent metallization through free carriers. Similar results also found in YbCrO3-films suggest that the observed phenomenon is more general and should, in principle, apply to a wider range of oxide systems. The ability to tailor ferromagnetic order above room temperature in oxide materials opens up many possibilities for novel technological applications of this counter intuitive effect.

Place, publisher, year, edition, pages
2014. Vol. 4, 4686- p.
National Category
Condensed Matter Physics
URN: urn:nbn:se:kth:diva-145262DOI: 10.1038/srep04686ISI: 000334286200001ScopusID: 2-s2.0-84926453514OAI: diva2:717658
VinnovaSwedish Research CouncilCarl Tryggers foundation Knut and Alice Wallenberg FoundationSwedish Energy Agency

QC 20140516

Available from: 2014-05-16 Created: 2014-05-15 Last updated: 2014-05-16Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Nagar, SandeepBelova, LyubovAhuja, RajeevRao, K. Venkat
By organisation
Materials Science and EngineeringEngineering Material PhysicsApplied Material Physics
In the same journal
Scientific Reports
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 50 hits
ReferencesLink to record
Permanent link

Direct link