Physics – Condensed Matter – Materials Science
Scientific paper
2011-04-27
J. Appl. Phys. 109, 084105 (2011)
Physics
Condensed Matter
Materials Science
36 pages, 11 figures
Scientific paper
10.1063/1.3576125
Single-phase perovskite 5 at.% Mn-doped and undoped polycrystalline BaTiO3 thin films have been grown under different oxygen partial pressures by pulsed laser deposition on platinum-coated sapphire substrates. Ferroelectricity is only observed for the Mn-doped and undoped BaTiO3 thin films grown under relatively high oxygen partial pressure. Compared to undoped BaTiO3, Mn-doped BaTiO3 reveals a low leakage current, increased dielectric loss, and a decreased dielectric constant. Ferromagnetism is seen on Mn-doped BaTiO3 thin films prepared under low oxygen partial pressure and is attributed to the formation of bound magnetic polarons (BMPs). This BMP formation is enhanced by oxygen vacancies. The present work confirms a theoretical work from C. Ederer and N. Spaldin on ferroelectric perovskites [Nature Mat. 3, 849 (2004)] which shows that the existence of ferroelectricity is incompatible with the existence of a spontaneous magnetization in Mn-doped BaTiO3 thin films.
Bürger Danilo
Helm Manfred
John Varun
Reuther Helfried
Schmidt Heidemarie
No associations
LandOfFree
Decisive role of oxygen vacancy in ferroelectric vs. ferromagnetic Mn-doped BaTiO3 thin films does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Decisive role of oxygen vacancy in ferroelectric vs. ferromagnetic Mn-doped BaTiO3 thin films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decisive role of oxygen vacancy in ferroelectric vs. ferromagnetic Mn-doped BaTiO3 thin films will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-475399