Change search
ReferencesLink to record
Permanent link

Direct link
Low-Temperature Magnetoresistive Effect in Bulk La0.7Ca0.3-xSrxMnO3 Perovskites.
Umeå University, Faculty of Science and Technology, Physics.
Umeå University, Faculty of Science and Technology, Physics.
Show others and affiliations
2001 (English)In: Materials Science Forum volumes 373-376: European Magnetic Materials and Applications (EMMA-2000): Proceedings of the 8th European Magnetic Materials and Applications Conference, Kyiv, Ukraine, June 7-10, 2000, Zürich: Trans Tech Publications , 2001, 585-588 p.Conference paper (Refereed)
Abstract [en]

The temperature and field dependencies of the magnetoresistivity (MR) were studied and analysed for two series of polycrystalline samples of La0.7Ca0.3-xSrxMnO3 (0 <x <0.3) obtained by the nitrate technology under different annealing conditions. X-ray patterns of the samples demonstrate a broad halo (3 degrees of 2 Theta approximate to7 degrees) related with diffusion scattering at the intergranular media. The temperature dependence of MR for these compounds showed, apart from the MR peak close to the ferromagnetic transition temperature T-c (caused by MR-mechanism inside grains), the significant increase of MR below T-c that is common for systems with weak bonds between grains. The low-temperature component of the MR depends on the average ionic radius of the cation at the A-site.

Place, publisher, year, edition, pages
Zürich: Trans Tech Publications , 2001. 585-588 p.
, Materials Science Forum, ISSN 0255-5476 ; 373
Keyword [en]
Manganites, colossal magnetoresistance, resistance, magnetoresistance, Curie point, polycrystalline thin film
National Category
Condensed Matter Physics
Research subject
URN: urn:nbn:se:umu:diva-22237DOI: 10.4028/0-87849-880-X.585ISBN: 978-0-87849-880-2OAI: diva2:213936
Editor: V.G. Bar'yakhtarAvailable from: 2009-04-30 Created: 2009-04-30 Last updated: 2010-01-21

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

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

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 31 hits
ReferencesLink to record
Permanent link

Direct link