Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/145
Title: Electronic and vibrational Raman spectroscopy of Nd0.5Sr0.5MnO3 through the phase transitions
Authors: Seikh, M M
Sood, A K
Narayana, Chandrabhas
Keywords: manganites
Jahn-Teller distortion
Raman scattering
phonon
spin excitation
spin-phonon coupling
electronic Raman scattering
Manganese Oxides
Scattering
Magnetoresistance
Lamno3
La1-Xcaxmno3
La1-Xsrxmno3
Segregation
Distortions
Resistivity
Manganites
Issue Date: Jan-2005
Publisher: Indian Academy of Sciences
Citation: Pramana-Journal of Physics 64(1), 119-128 (2005)
Abstract: Raman scattering experiments have been carried out on single crystals of Nd0.5Sr0.5MnO3 as a function of temperature in the range of 320-50 K, covering the paramagnetic insulator-ferromagnetic metal transition at 250 K and the charge-ordering antiferromagnetic transition at 150 K. The diffusive electronic Raman scattering response is seen in the paramagnetic phase which continue to exist even in the ferromagnetic phase. eventually disappearing below 150 K. We understand the existence of diffusive response in the ferromagnetic phase to the coexistence of the different electronic ph. The frequency, and linewidth of the phonons across the transitions show significant changes, which cannot be accounted for only by anharmonic interactions.
URI: http://hdl.handle.net/10572/145
Other Identifiers: 0304-4289
Appears in Collections:Research Articles (Chandrabhas N.)

Files in This Item:
File Description SizeFormat 
2005 indian academy of sciences.pdf1.18 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.