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Pressure effects in granular La0.7Ca0.3-xSrxMnO3.
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
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2002 (English)In: Physica Status Solidi A, Applied Research vol. 189, issue 2: Proceedings of the 1st Seeheim Conference on Magnetism (SCM2001), Seeheim 2001, Wiley Interscience , 2002, 281-285 p.Conference paper, Published paper (Refereed)
Abstract [en]

This paper discusses the effect of hydrostatic pressure up to 0.8 GPa on magnetic properties of manganites La0.7Ca0.3 - xSrxMnO3 (0 x 0.3, x = 0.03) and magnetoresistance data in an applied magnetic field of 5.0 T. Application of pressure enlarges the temperature range of the ferromagnetic phase. Curie temperature, TC, as a function of pressure and the temperature of resistance maximum, Tp, showed an anomaly for x = 0.15. The slope of pressure dependence of TC for x < 0.15 and x > 0.15 is higher than for x = 0.15. Dependence of temperature Tp on x consists of two curves: for x 0.15 and for x 0.15. There is a sharp bend on the Tp curve at x = 0.15. The structural phase transition from orthorhombic phase (x < 0.15) to rhombohedral one (x 0.15) corresponds to that concentration.

Place, publisher, year, edition, pages
Wiley Interscience , 2002. 281-285 p.
Series
Physica Status Solidi A, ISSN 0031-8965 ; 189
Keyword [en]
Manganites, LaCaSrMnO3, high pressure, magnetic properties, susceptibility, Curie temperature, phase diagram, phase transitions, electrical transport properties, magnetoresistance, electrical resistance, orthorhombic structure, rhombohedral structure
National Category
Condensed Matter Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:umu:diva-20821DOI: 10.1002/1521-396X(200202)189:2<281::AID-PSSA281>3.0.CO;2-OOAI: oai:DiVA.org:umu-20821DiVA: diva2:209638
Note
Editor Mohammad GhafariAvailable from: 2009-03-26 Created: 2009-03-26 Last updated: 2010-01-20

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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