dc.contributor.author |
Chaturvedi, Smita |
en_US |
dc.contributor.author |
Shyam, Priyank |
en_US |
dc.contributor.author |
Apte, Amey |
en_US |
dc.contributor.author |
Kumar, Jitender |
en_US |
dc.contributor.author |
Bhattacharyya, Arpan |
en_US |
dc.contributor.author |
Awasthi, A. M. |
en_US |
dc.contributor.author |
KULKARNI, SULABHA |
en_US |
dc.date.accessioned |
2019-04-26T09:13:53Z |
|
dc.date.available |
2019-04-26T09:13:53Z |
|
dc.date.issued |
2016-05 |
en_US |
dc.identifier.citation |
Physical Review B, 93(17), 045433. |
en_US |
dc.identifier.issn |
2469-9950 |
en_US |
dc.identifier.issn |
2469-9969 |
en_US |
dc.identifier.uri |
http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/2518 |
|
dc.identifier.uri |
https://doi.org/10.1103/PhysRevB.93.174117 |
en_US |
dc.description.abstract |
Samarium orthoferrite (SmFeO3) has been the subject of debate on the existence or nonexistence of ferroelectric properties. It has a high spin-reorientation transition temperature TSR (480 K). Detailed synchrotron x-ray diffraction and Raman spectroscopy dielectric investigations in the 300 to 600 K temperature range of SmFeO3 nanoparticles (?65nm) have been performed. Raman spectroscopy established the existence of strong spin-phonon coupling and magnetostriction in the system. Magnetic measurements showed a spin-reorientation transition region from 480 to 450 K similar to that of a single crystal. The dielectric constant confirmed a clear anomaly around TSR. The signature of unusual relaxor ferroelectric behavior in SmFeO3 nanoparticles from 380 to 480 K was observed in the dielectric properties. The electron density plots obtained using Rietveld refinement of the synchrotron x-ray diffraction data showed the displacement of the Sm and Fe ions, which can play a key role in the anomalous behavior at TSR. The analysis indicated the presence of magnetoelectric coupling due to the exchange interaction between Sm and Fe spins in SmFeO3 nanoparticles |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
American Physical Society |
en_US |
dc.subject |
Dynamics of electron |
en_US |
dc.subject |
Spin-phonon |
en_US |
dc.subject |
Dielectric properties |
en_US |
dc.subject |
Role of exchange striction |
en_US |
dc.subject |
Magnetoelectric coupling |
en_US |
dc.subject |
2016 |
en_US |
dc.title |
Dynamics of electron density, spin-phonon coupling, and dielectric properties of SmFeO3 nanoparticles at the spin-reorientation temperature: Role of exchange striction |
en_US |
dc.type |
Article |
en_US |
dc.contributor.department |
Dept. of Physics |
en_US |
dc.identifier.sourcetitle |
Physical Review B |
en_US |
dc.publication.originofpublisher |
Foreign |
en_US |