Published April 1997
| Version v1
Journal article
Critical behavior of magnetoresistivity in La2/3Ca1/3MnO3
Creators
- 1. IFIMUP, University of Porto, Rua do Campo Alegre, 687, 4150 Porto (Portugal)
- 2. Departamento de Fisica de la Materia Condensada e Instituto de Ciencia de Materiales, University of Zaragoza-CSIC, 50009 Zaragoza (Spain)
Description
The electrical resistivity has been measured in ceramic La2/3Ca1/3MnO3 as a function of temperature and magnetic field, including the vicinity of the Curie temperature TC congruent 267 K and down to low fields. We found that the field dependence of the magnetoresistance Δρ/ρ reveals peculiar features close to TC, unknown in conventional ferromagnets. Particularly, a finite linear response in field, besides the usual quadratic term, is found above TC. We propose that this behavior is due to the coexistence of two different types of magnetic fluctuations, related to itinerant and localized charge carriers. copyright 1997 American Institute of Physics
Additional details
Publishing Information
- Journal Title
- Journal of Applied Physics
- Journal Volume
- 81
- Journal Issue
- 8
- Journal Page Range
- p. 5760-5762.
- ISSN
- 0021-8979
- CODEN
- JAPIAU
Conference
- Title
- 41. annual conference on magnetism and magnetic materials.
- Dates
- 12-15 Nov 1996.
- Place
- Atlanta, GA (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28072532
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CALCIUM COMPOUNDS; CALCIUM OXIDES; CERAMICS; CURIE POINT; ELECTRIC CONDUCTIVITY; FERROMAGNETIC MATERIALS; LANTHANUM COMPOUNDS; LANTHANUM OXIDES; MAGNETORESISTANCE; MANGANESE OXIDES; PHASE TRANSFORMATIONS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; ELECTRICAL PROPERTIES; MAGNETIC MATERIALS; MANGANESE COMPOUNDS; MATERIALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE
Optional Information
- Secondary number(s)
- CONF-961141--.