Published July 1997
| Version v1
Journal article
Giant magnetoresistance in La0.6Pb0.4Mn1-xTixO3 films: Enhancement of magnetoresistance due to Ti4+ substitution in Mn4+ sites
- 1. Indian Inst. of Science, Bangalore (India)
Description
Nonmagnetic Ti4+ ion is substituted for Mn4+ in La0.6Pb0.4MnO3. The resulting La0.6Pb0.4Mn(1-x)TixO3 (0 ≤ x ≤ 0.3) crystallizes in rhombohedral structure. The insulator-to-metal transition temperature decreases from 320 K to 92 K as x is varied from 0 to 0.09. Epitaxial films for the compositions x = 0, 0.03, 0.05, and 0.07 are fabricated by pulsed-laser deposition. Magnetoresistance at 6 T is enhanced from 38% for x = 0 to 75% for x = 0.07. The presence of Ti4+ (d0) ion decreases the Mn-Mn interaction through oxygen and thereby affects the resistivity and magnetoresistance of La0.6Pb0.4MnO3
Additional details
Publishing Information
- Journal Title
- Materials Research Bulletin
- Journal Volume
- 32
- Journal Issue
- 7
- Journal Page Range
- p. 831-837.
- ISSN
- 0025-5408
- CODEN
- MRBUAC
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28067255
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CRYSTAL STRUCTURE; LANTHANUM OXIDES; LEAD OXIDES; MAGNETORESISTANCE; MANGANESE OXIDES; MATERIAL SUBSTITUTION; TITANIUM OXIDES; TRANSITION TEMPERATURE
- Descriptors DEC
- CHALCOGENIDES; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; LANTHANUM COMPOUNDS; LEAD COMPOUNDS; MANGANESE COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; THERMODYNAMIC PROPERTIES; TITANIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS