The beta to gamma (insulator-metal) transition in BiFeO3

Details The beta to gamma (insulator-metal) transition in BiFeO3 The beta to gamma (insulator-metal) transition in BiFeO3

2009-08-25

arxiv.org/abs/0908.3613v2

Adv. Funct. Mater., 20, 2116-2123, 2010

Physics

Condensed Matter

Materials Science

Scientific paper

10.1002/adfm.201000118

High temperature powder neutron diffraction experiments have been conducted around the reported beta-gamma, insulator-metal phase transition (~ 930 C) in BiFeO3. The results demonstrate that while a small volume contraction is observed at the transition temperature, consistent with an insulator-metal transition, both the beta and gamma phase of BiFeO3 exhibit orthorhombic symmetry i.e. no further increase of symmetry occurs under the present experimental conditions, contrary to previous suggestions. Furthermore we observe the gamma orthorhombic phase to persist up to a temperature of approximately 950 C before complete decomposition into Bi2Fe4O9 (and liquid Bi2O3), which subsequently begins to decompose at approximately 960 C.

Affiliated with

Also associated with

No associations

Rating

The beta to gamma (insulator-metal) transition in BiFeO3 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 The beta to gamma (insulator-metal) transition in BiFeO3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The beta to gamma (insulator-metal) transition in BiFeO3 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-233318