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Structural, magnetic, and transport properties in a Cu-doped La[sub 0.7]Ca[sub 0.3]MnO[sub 3] system.
- Source :
-
Journal of Applied Physics . 12/15/2001, Vol. 90 Issue 12, p6263. 5p. 2 Charts, 5 Graphs. - Publication Year :
- 2001
-
Abstract
- The structural, magnetic, and transport properties of La[sub 0.7]Ca[sub 0.3]Mn[sub 1 - x]Cu[sub x]O[sub 3] (0 ≤ x ≤ 0.2) have been investigated. The maximum magnetoresistance (MR) is about 4 × 10[sup 6]% for the sample with x = 0.15, which is about ∼10[sup 4] times the maximum MR for samples with x ≤ 0.1. A change in the structural parameters and magnetic and resistivity properties of the samples shows that Cu exists in Cu[sup 3+] ionic form in the sample with x ≤ 0.05. However, Cu[sup 2+] ions begin to appear and then they increase with further Cu doping. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MANGANITE
*MAGNETORESISTANCE
*EARTH resistance (Geophysics)
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 90
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 5643476
- Full Text :
- https://doi.org/10.1063/1.1415757