|
Giant magnetoresistance (GMR) at 300 K and 5.5 T with {Delta}{ital R}/{ital R}(0)=74% was observed in single crystals of La{sub 0.65}(PbCa){sub 0.35}MnO{sub 3}. The maximum GMR occurs exactly at the ferromagnetic--paramagnetic phase transition temperature ({ital T}{sub {ital c}}). For {ital T}{lt}{ital T}{sub {ital c}}, the {ital R}({ital T}) curve is closely related to the {ital M}({ital T}) curve. A sign change in the curvatures of {ital R}({ital H}) curves below and above {ital T}{sub {ital c}} has been observed, indicating that two different mechanisms are responsible for the magnetic scatterings of the carriers in two separate temperature regions. {copyright} {ital 1995} {ital American} {ital Institute} {ital of} {ital Physics}.
|
| Authors: |
Liu, J.Z.;
Chang, I.C.;
Irons, S.;
Klavins, P.;
Shelton, R.N. [Physics Department, University of California, Davis, California 95616 (United States)];
Song, K.;
Wasserman, S.R. [Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)]
|
| Publication Date: | 1995 Jun 05 |
|---|
| OSTI Identifier: | 64847 |
|---|
| DOE Contract Number: | W-31109-ENG-38 |
|---|
| Resource Type: | Journal Article |
|---|
| Resource Relation: | Journal Name: Applied Physics Letters; Journal Volume: 66; Journal Issue: 23; Other Information: PBD: 5 Jun 1995 |
|---|
| Research Org: | Argonne National Laboratory (ANL), Argonne, IL |
|---|
| Country of Publication: | United States |
|---|
| Language: | English |
|---|
| Format: | Size: pp. 3218-3220 |
|---|
| Other Number(s): | Journal ID: APPLAB; ISSN 0003-6951; TRN: TRN: 9511M0055 |
|---|
| Subject: | 36 MATERIALS SCIENCE; LANTHANUM OXIDES; MAGNETORESISTANCE; LEAD OXIDES; CALCIUM OXIDES; MANGANESE OXIDES; FERROMAGNETISM; PARAMAGNETISM; PHASE TRANSFORMATIONS; TEMPERATURE DEPENDENCE; MONOCRYSTALS; FILMS; PEROVSKITES |
|---|
| Update Date: | 2009 Dec 16 |
|---|
Top |
|
