Room temperature metal-insulator transition observed in Pb substituted lanthanum manganite
IR@NPL: CSIR-National Physical Laboratory, New Delhi
View Archive Info| Field | Value | |
| Title |
Room temperature metal-insulator transition observed in Pb substituted lanthanum manganite
|
|
| Creator |
Yadav, Akash
Shah, Jyoti Tripathi, Rahul Kotnala, R. K. |
|
| Subject |
Materials Science
|
|
| Description |
Structural, magnetic and transport property of Pb substituted LaMnO3 (La(1-x)Pbs(x)MnO(3); x=0.1, 0.2, 0.3, 0.4, 0.5) prepared by solid state reaction route have been studied systematically. X-ray diffraction,SEM, VSM,magneto-transport measurements were carried out on prepared samples. All the samples below x=0.4 composition were crystallized into single phase with R-3C space group of trigonal crystal class. The explored physical properties like magnetoresistance (MR), resistivity, metal-insulator transition temperature (T-p), magnetization (MW)and Curie temp. (T-c) varies with Pb concentration. Higher T-p (298 K) and minimum resistivity was recorded for x=0.3 sample whereas no distinct peak corresponding to metal-insulator transition was observed for La-0.5Pb0.5MnO3. Appreciable magnetoresistance (MR%) values were obtained for all the samples at 300 K.X-ray photoelectron spectroscopy (XPS) confirms the +2 oxidation state of Pb in all substituted samples. Fine tuning of Tc could be achieved by varying Pb concentration in substituted LaMnO(3)samples, hence, it can find application in the field of cancer treatment i.e. Magnetic Hyperthermia.
|
|
| Publisher |
Elsevier
|
|
| Date |
2017-09-17
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://npl.csircentral.net/2842/1/Room%20temperature%20metal.pdf
Yadav, Akash and Shah, Jyoti and Tripathi, Rahul and Kotnala, R. K. (2017) Room temperature metal-insulator transition observed in Pb substituted lanthanum manganite. Ceramics International, 43 (13). pp. 10508-10514. ISSN 0272-8842 |
|
| Relation |
http://npl.csircentral.net/2842/
|
|