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Title: Strong magnetoelectric and spin phonon coupling in SmFeO{sub 3}/PMN-PT composite

Abstract

We have investigated spin phonon coupling in the strain coupled magnetoelectric SmFeO{sub 3}/0.65Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}–0.35PbTiO{sub 3} (PMN-PT) composite in the temperature range of 300–650 K by Raman spectroscopy and magnetic measurements. The SmFeO{sub 3}/PMN-PT composite shows sharp rise in magnetic moment across ferroelectric transition temperature (T{sub c}) of PMN-PT. Around this transition temperature (T{sub c} of PMN-PT), the temperature evolution of Raman spectra of the composite also shows anomalies in the phonon frequencies and line width corresponding to the SmFeO{sub 3} phase which indicate structural modifications in the SmFeO{sub 3} phase around T{sub c} of PMN-PT. The observed structural, magnetic, and phonon anomalies of SmFeO{sub 3} around T{sub c} of PMN-PT in SmFeO{sub 3}/PMN-PT are attributed to spin-phonon coupling providing evidence of strong strain mediated magnetoelectric effects.

Authors:
; ;  [1]; ;  [2]
  1. Nano Functional Materials Laboratory, Laser Materials Development and Devices Division, Raja Ramanna Centre for Advanced Technology, Indore 452013 (India)
  2. UGC-DAE Consortium for Scientific Research, Indore 452017 (India)
Publication Date:
OSTI Identifier:
22590527
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 109; Journal Issue: 8; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COUPLING; ELECTRICAL PROPERTIES; FERROELECTRIC MATERIALS; LINE WIDTHS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; PHONONS; RAMAN SPECTRA; RAMAN SPECTROSCOPY; SPIN; STRAINS; TEMPERATURE RANGE 0273-0400 K; TEMPERATURE RANGE 0400-1000 K; TRANSITION TEMPERATURE

Citation Formats

Ahlawat, Anju, E-mail: anjahlawat@gmail.com, E-mail: anju@rrcat.gov.in, Satapathy, S., Gupta, P. K., Sathe, V. G., and Choudhary, R. J.. Strong magnetoelectric and spin phonon coupling in SmFeO{sub 3}/PMN-PT composite. United States: N. p., 2016. Web. doi:10.1063/1.4961581.
Ahlawat, Anju, E-mail: anjahlawat@gmail.com, E-mail: anju@rrcat.gov.in, Satapathy, S., Gupta, P. K., Sathe, V. G., & Choudhary, R. J.. Strong magnetoelectric and spin phonon coupling in SmFeO{sub 3}/PMN-PT composite. United States. doi:10.1063/1.4961581.
Ahlawat, Anju, E-mail: anjahlawat@gmail.com, E-mail: anju@rrcat.gov.in, Satapathy, S., Gupta, P. K., Sathe, V. G., and Choudhary, R. J.. 2016. "Strong magnetoelectric and spin phonon coupling in SmFeO{sub 3}/PMN-PT composite". United States. doi:10.1063/1.4961581.
@article{osti_22590527,
title = {Strong magnetoelectric and spin phonon coupling in SmFeO{sub 3}/PMN-PT composite},
author = {Ahlawat, Anju, E-mail: anjahlawat@gmail.com, E-mail: anju@rrcat.gov.in and Satapathy, S. and Gupta, P. K. and Sathe, V. G. and Choudhary, R. J.},
abstractNote = {We have investigated spin phonon coupling in the strain coupled magnetoelectric SmFeO{sub 3}/0.65Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}–0.35PbTiO{sub 3} (PMN-PT) composite in the temperature range of 300–650 K by Raman spectroscopy and magnetic measurements. The SmFeO{sub 3}/PMN-PT composite shows sharp rise in magnetic moment across ferroelectric transition temperature (T{sub c}) of PMN-PT. Around this transition temperature (T{sub c} of PMN-PT), the temperature evolution of Raman spectra of the composite also shows anomalies in the phonon frequencies and line width corresponding to the SmFeO{sub 3} phase which indicate structural modifications in the SmFeO{sub 3} phase around T{sub c} of PMN-PT. The observed structural, magnetic, and phonon anomalies of SmFeO{sub 3} around T{sub c} of PMN-PT in SmFeO{sub 3}/PMN-PT are attributed to spin-phonon coupling providing evidence of strong strain mediated magnetoelectric effects.},
doi = {10.1063/1.4961581},
journal = {Applied Physics Letters},
number = 8,
volume = 109,
place = {United States},
year = 2016,
month = 8
}
  • The coupling of phonon with spin in strain coupled magnetoelectric NiFe{sub 2}O{sub 4} (NFO)/0.65Pb(Mg{sub 1/3}Nb{sub 2/3})O{sub 3}–0.35PbTiO{sub 3} (PMN-PT) composite was investigated by temperature-dependent Raman spectroscopy and magnetic measurements in the range 30–350 °C. Pure NFO shows usual ferromagnetic behaviour in this temperature range while NFO/PMN-PT composite show dramatic change in magnetic moment across ferroelectric transition temperature (T{sub c} ∼ 180 °C) of PMN-PT. The temperature evolution of the Raman spectra for the composite shows significant phonon anomalies in T-site (Fe-O) and O-site (Ni/Fe-O) phonon modes at ferroelectric transition temperature is attributed to spin phonon coupling in NFO/PMN-PT composite. The strain mediated magnetoelectric couplingmore » mechanism in this composite is apparent from the observed spin phonon interaction.« less
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