Published September 1, 1995
| Version v1
Journal article
Substantial pressure effects on the electrical resistivity and ferromagnetic transition temperature of La1-xCaxMnO3
- 1. Condensed Matter and Thermal Physics, MST-10, Mail Stop K764, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Description
The influence of hydrostatic pressure on the electrical resistivity ρ and ferromagnetic transition temperature Tc of La1-xCaxMnO3 is presented for x=0.21, 0.33, and 0.40. Pressure strongly decreases ρ and drives Tc up at rates as large as +37 K/GPa for the x=0.21 specimen; this is significantly larger than dTc/dP values observed in conventional ferromagnets and about eight times larger than dTN/dP observed in Ca1-xSrxMnO3 antiferromagnets. The transport mechanism in these oxides is influenced in a qualitatively similar way by both pressure and magnetic field. The results are interpreted in the framework of the double-exchange interaction involving conduction via magnetic polarons
Additional details
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter
- Journal Volume
- 52
- Journal Issue
- 10
- Journal Page Range
- p. R7006-R7009.
- ISSN
- 0163-1829
- CODEN
- PRBMDO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 27018863
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE;
- Descriptors DEI
- CALCIUM OXIDES; CURIE POINT; ELECTRIC CONDUCTIVITY; FERROMAGNETISM; HIGH-TC SUPERCONDUCTORS; LANTHANUM OXIDES; MANGANESE OXIDES; POLARONS; PRESSURE DEPENDENCE
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; ELECTRICAL PROPERTIES; LANTHANUM COMPOUNDS; MAGNETISM; MANGANESE COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; QUASI PARTICLES; RARE EARTH COMPOUNDS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE