WFRF:(Mathieu Roland)
Search: WFRF:(Mathieu Roland) > Structural and magn...
- 16 of 187
- Previous record
- Next record
- To hitlist
Structural and magnetic properties of the ordered perovskite Pb2CoTeO6
- Ivanov, S. A. (author)
-
- Nordblad, Per (author)
- Uppsala universitet,Fasta tillståndets fysik
-
- Mathieu, Roland (author)
- Uppsala universitet,Fasta tillståndets fysik
- show more...
- Ritter, C. (author)
- show less...
- (creator_code:org_t)
- Royal Society of Chemistry (RSC), 2010
- 2010
- English.
- In: Dalton Transactions. - : Royal Society of Chemistry (RSC). - 1477-9226 .- 1477-9234. ; 39:46, s. 11136-11148
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- The complex perovskite Pb2CoTeO6 (PCTO) has been prepared as polycrystalline powders by a solid state reaction route, and the crystal structure and magnetic properties have been investigated using a combination of X-ray and neutron powder diffraction, electron microscopy, dielectric, calorimetric and magnetic measurements. It was shown that at room temperature this compound adopts a trigonal perovskite structure, space group R (3) over bar (a = 5.6782(1) angstrom, c = 13.8552(3) angstrom). The compound undergoes a number of temperature-induced phase transitions and adopts four different structures in the temperature range 5 500 K: monoclinic in P2(1)/n (5 < T < 125 K, tilt system (a(+)b(-)b(-))), monoclinic in I2/m (125 < T < 210 K, tilt system (a(0)b(-)b(-))), rhombohedral in R (3) over bar (210 < T < 370 K, tilt system (a(-)a(-)a(-))), and finally cubic in Fm (3) over barm (above 370 K without any tilting). These structural phase transitions are coupled to changes in the dielectric constant and the heat capacity around 210 and 370 K. A long-range antiferromagnetically ordered state has been identified from neutron powder diffraction and magnetic studies at different temperatures. Magnetic diffraction peaks were registered below the transition at about 16 K and a possible model for the magnetic structure is proposed. Possible coexistence of long-range ordering of the electrical dipoles and the magnetic moments at low temperatures making PCTO a potential multiferroic candidate is discussed.
Keyword
- TECHNOLOGY
- TEKNIKVETENSKAP
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
- Dalton Transactions (Search for host publication in LIBRIS)
To the university's database
- 16 of 187
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Ivanov, S. A.
- Nordblad, Per
- Mathieu, Roland
- Tellgren, Roland
- Ritter, C.
- Articles in the publication
- Dalton Transacti ...
- By the university
- Uppsala University
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
