Change search
ReferencesLink to record
Permanent link

Direct link
Towards a new class of heavy ion doped magnetic semiconductors for room temperature applications
Show others and affiliations
2015 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 5, 17053Article in journal (Refereed) PublishedText
Abstract [en]

The article presents, using Bi doped ZnO, an example of a heavy ion doped oxide semiconductor, highlighting a novel p-symmetry interaction of the electronic states to stabilize ferromagnetism. The study includes both ab initio theory and experiments, which yield clear evidence for above room temperature ferromagnetism. ZnBixO1-x thin films are grown using the pulsed laser deposition technique. The room temperature ferromagnetism finds its origin in the holes introduced by the Bi doping and the p-p coupling between Bi and the host atoms. A sizeable magnetic moment is measured by means of x-ray magnetic circular dichroism at the O K-edge, probing directly the spin polarization of the O(2p) states. This result is in agreement with the theoretical predictions and inductive magnetometry measurements. Ab initio calculations of the electronic and magnetic structure of ZnBixO1-x at various doping levels allow to trace the origin of the ferromagnetic character of this material. It appears, that the spin-orbit energy of the heavy ion Bi stabilizes the ferromagnetic phase. Thus, ZnBixO1-x doped with a heavy non-ferromagnetic element, such as Bi, is a credible example of a candidate material for a new class of compounds for spintronics applications, based on the spin polarization of the p states.

Place, publisher, year, edition, pages
Nature Publishing Group, 2015. Vol. 5, 17053
Keyword [en]
Pulsed-Laser Deposition, Augmented-Wave Method, Zno Thin-Films, Ferromagnetism, Transition, Model
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-179161DOI: 10.1038/srep17053ISI: 000365093400001PubMedID: 26592564ScopusID: 2-s2.0-84947967563OAI: oai:DiVA.org:kth-179161DiVA: diva2:883263
Note

QC 20151216

Available from: 2015-12-16 Created: 2015-12-11 Last updated: 2015-12-16Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMedScopus

Search in DiVA

By author/editor
Ahuja, Rajeev
By organisation
School of Industrial Engineering and Management (ITM)
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: 14 hits
ReferencesLink to record
Permanent link

Direct link