umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Structure and pressure effects on the properties of La0.7Ca0.3-xSrxMnO3 manganites.
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
Show others and affiliations
2002 (English)In: Journal of Applied Physics vol. 91: Proceedings of the 46th Annual Conference on Magnetism and Magnetic Materials, Seattle 2001, American Institute of Physics , 2002, 7739-7741 p.Conference paper, Published paper (Refereed)
Abstract [en]

We report a study of the structure and pressure effects on magnetic and transport properties of a lanthanum manganite, La0.7Ca0.3–xSrxMnO3 (0<=x<=0.3, Deltax = 0.03). The pressure coefficient of the Curie temperature (Tc), dTc/dP, is shown to depend on x. The temperature Tc increases approximately linearly under applied pressure as dTc/dP[approximate]14 K/GPa in the orthorhombic (Pbnm) phase and as dTc/dP[approximate]7.5 K/GPa in the rhombohedral (R3-bar c). The value of dTc/dP shows a minimum ([approximate]3.5 K/GPa) and the temperature of the resistance maximum, Tp(x), shows a change of slope at x = 0.15, corresponding to a concentration structural phase transition. Differences between the values of dTc/dP and the slopes of Tp vs x in Pbnm and R3-bar c phases are explained by the different effect of external pressure on the Mn–O bond length and the Mn–O–Mn bond angle, and by the different internal pressure effect (depending on the value of x) in those phases, respectively.

Place, publisher, year, edition, pages
American Institute of Physics , 2002. 7739-7741 p.
Series
Journal of Applied Physics, ISSN 0021-8979 ; 91
Keyword [en]
Manganites, high pressure, magnetic properties, resistance, electrical transport properties, lanthanum manganite, LaCaSrMnO3, Curie temperature, orthorhombic structure, rhombohedral structure
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-20772DOI: 10.1063/1.1447293OAI: oai:DiVA.org:umu-20772DiVA: diva2:209527
Note
Editors R.S. Beach, L. Folks, M.E. McHenry, M.J. O'Shea, M. Pardavi-Horvath, and M.J. Pechan.Available from: 2009-03-25 Created: 2009-03-25 Last updated: 2010-01-20

Open Access in DiVA

No full text

Other links

Publisher's full texthttp://link.aip.org/link/?JAPIAU/91/7739/1

Search in DiVA

By author/editor
Sundqvist, Bertil
By organisation
Physics
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 83 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf