Weak charge-ordering behavior in phase separated (Ln1/3Sm2/3)2/3Ca1/3MnO3 (Ln=Pr and La) manganites
| hal.structure.identifier | Department of Metallurgical Engineering and Materials Science | |
| hal.structure.identifier | Department of Physics | |
| dc.contributor.author | ASTHANA, Saket | |
| hal.structure.identifier | Department of Physics | |
| dc.contributor.author | DHO, Joonghoe | |
| hal.structure.identifier | Department of Metallurgical Engineering and Materials Science | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | BAHADUR, Dhirendra | |
| dc.date.issued | 2007 | |
| dc.identifier.issn | 0038-1098 | |
| dc.description.abstractEn | We have studied a weak charge-ordering behavior in phase separated (Ln1/3Sm2/3)2/3Ca1/3MnO3 (Ln=Pr and La) manganites with same hole doping but slightly different tolerance factors. The M(T) and ρ(T) curves of the Pr-sample showed an anomaly caused by a weak charge-order (CO) transition at not, vert, similar210 K, while that of La-sample did not. However, the La-sample displayed a weak anomaly related to the CO instability in the derivative curve of the temperature dependent magnetoresistance. This result is understood on the basis that the CO phase in La-sample is partly suppressed by a large magnetic field of not, vert, similar80 kOe, while in Pr-sample it is not collapsed in that field scale. Our data support the existence of charge-ordering, electronic phase separation and a field-induced reduction of weak CO instability for La-sample, which can contribute towards high MR especially at lower temperatures due to partial melting of CO phase and/or percolation behavior. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.title.en | Weak charge-ordering behavior in phase separated (Ln1/3Sm2/3)2/3Ca1/3MnO3 (Ln=Pr and La) manganites | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.ssc.2007.07.008 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Solid State Communications | |
| bordeaux.page | 522-526 | |
| bordeaux.volume | 143 | |
| bordeaux.issue | 11-12 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00179960 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| dc.subject.it | Manganites | |
| dc.subject.it | Magnetoresistance | |
| dc.subject.it | Colossal magnetoresistance | |
| dc.subject.it | Electronic phase separation | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00179960v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Solid%20State%20Communications&rft.date=2007&rft.volume=143&rft.issue=11-12&rft.spage=522-526&rft.epage=522-526&rft.eissn=0038-1098&rft.issn=0038-1098&rft.au=ASTHANA,%20Saket&DHO,%20Joonghoe&BAHADUR,%20Dhirendra&rft.genre=article |
Fichier(s) constituant ce document
| Fichiers | Taille | Format | Vue |
|---|---|---|---|
|
Il n'y a pas de fichiers associés à ce document. |
|||