TITLE

Raman spectroscopy study of ferroelectric modes in [001]-oriented 0.67Pb(Mg1/3Nb2/3)O3–0.33PbTiO3 single crystals

AUTHOR(S)
Shen, Mingrong; Siu, G. G.; Xu, Z. K.; Cao, Wenwu
PUB. DATE
June 2005
SOURCE
Applied Physics Letters;6/20/2005, Vol. 86 Issue 25, p252903
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
This work investigates the evolution of micro-Raman spectra of a [001]-oriented 0.67Pb(Mg1/3Nb2/3)O3–0.33PbTiO3 single crystal in the temperature range from -120 to 200 °C. For a poled sample, the T1u mode splits into an E mode (remaining at 51 cm-1) and a new A1 mode (shifting to 95 cm-1 at -120 °C) at the tetragonal to rhombohedral phase transition (Tc∼ 70 °C), while other modes remain the same. This A1 mode belongs to the rhombohedral phase. If the sample is depoled, this A1 mode persists for temperatures much above Tc on heating, implying that local regions with rhombohedral symmetry still exist in the tetragonal phase. The underdevelopment of long-range order in the depoled crystal causes the sample to have typical characteristics of a relaxor while poling will enhance the long-range order to make it into a regular ferroelectric.
ACCESSION #
17636557

 

Related Articles

  • Effect of Heat Treatment Conditions on Properties of Lead-Free Bi2GeO5 Ferroelectric Glass Ceramics. Kantha, P.; Pengpat, K.; Rujijanagul, G.; Tunkasiri, T.; Eitssayeam, S.; Intatha, U.; Sirisoonthorn, S. // AIP Conference Proceedings;7/23/2009, Vol. 1151 Issue 1, p166 

    Nowadays, lead-free ferroelectric materials have attracted much interest among materials scientists as a result of environmental concern. The bismuth germanate (Bi2GeO5) phase, one of the lead-free ferroelectric crystals, is of particular interest as its composition already contains good glass...

  • Are dipolar liquids ferroelectric? Shelton, David P. // Journal of Chemical Physics;8/22/2005, Vol. 123 Issue 8, p084502 

    VH and HV depolarized hyper-Rayleigh scattering spectra were measured for liquid solutions of dipolar CH3CN in nondipolar C2Cl4 at T=300 K. The VH spectrum contains a strong narrow peak due to a slowly relaxing longitudinal orientation mode. This peak is absent in the HV spectrum, and it...

  • Micro-Raman spectroscopy on a-C:H nanoparticles. Suk-Ho Hong; Winter, Jörg // Journal of Applied Physics;12/15/2005, Vol. 98 Issue 12, p124304 

    We present the Raman spectra of amorphous hydrogenated carbon nanoparticles prepared in an Ar–CH4 hydrocarbon plasma. The measured Raman spectra are compared with that of both soft polymerlike and hard diamondlike a-C:H films deposited from pure CH4 plasma. The film properties were...

  • Raman Spectroscopy of the OH Group Vibrations in Structural Complexes of Liquid Water. Pershin, S. M. // Optics & Spectroscopy;Apr2005, Vol. 98 Issue 4, p543 

    A number of spectral features in the structure of the OH band of water located at ∼3450cm–1 are registered in a series of 34 Raman spectra. Each spectrum of the series is excited by a pair of successive second-harmonic pulses of a moderate intensity (15–20MW/cm2) from a Nd:YAG...

  • Effect of radiation-induced defects on the dielectric response of lead scandoniobate ferroelectric ceramics. Sopit, A.; Burkhanov, A.; Sternberg, A. // Physics of the Solid State;Jun2006, Vol. 48 Issue 6, p1160 

    The effect of ionizing gamma irradiation on the frequency and temperature dependences of the permittivity ε’( T) for lead scandoniobate relaxor (disordered) ferroelectric ceramics before and after thermal annealing was investigated by low-and infralow-frequency dielectric spectroscopy....

  • Growth, Thermal and Spectral Properties of Er3+-Doped and Er3+/Yb3+-Codoped Li3Ba2La3(WO4)8 Crystals. Bin Xiao; Zhoubin Lin; Lizhen Zhang; Yisheng Huang; Guofu Wang // PLoS ONE;Jul2012, Vol. 7 Issue 7, p1 

    This paper reports the growth and spectral properties of Er3+-doped and Er3+/Yb3+-codoped Li3Ba2La3(WO4)8 crystals. The Er3+: Li3 Ba2La3(WO4)8 crystal with dimensions of 56 mm×28 mm×9 mm and Er3+/Yb3+: Li3Ba2La3(WO4)8 crystal with dimensions of 52 mm×24 mm×8 mm were obtained by...

  • Local symmetry breaking in PbxSr1-xTiO3 ceramics and composites studied by Raman spectroscopy. Jain, M.; Yuzyuk, Yu. I.; Katiyar, R. S.; Somiya, Y.; Bhalla, A. S. // Journal of Applied Physics;7/15/2005, Vol. 98 Issue 2, p024116 

    Local symmetry breaking in PbxSr1-xTiO3 (PST) solid solutions was revealed by Raman spectroscopy below and above the ferroelectric phase-transition temperature. In the paraelectric phase, local symmetry breaking associated with the polar clusters localized mostly at grain boundaries in ceramic...

  • Raman spectroscopy studies of Ce-doping effects on Ba0.5Sr0.5TiO3 thin films. Wang, S. Y.; Cheng, B. L.; Can Wang; Dai, S. Y.; Jin, K. J.; Zhou, Y. L.; Lu, H. B.; Chen, Z. H.; Yang, G. Z. // Journal of Applied Physics;1/1/2006, Vol. 99 Issue 1, p013504 

    Ba0.5Sr0.5TiO3 (BST) thin films are among the best-known ferroelectric and dielectric materials. Ce-doped BST films have been fabricated by pulsed laser deposition in order to enhance their dielectric properties. X-ray diffraction, atomic force microscopy, and Raman spectroscopy have been used...

  • Micro-Raman Spectroscopy of Natural and Synthetic Ferritins and Their Mimetics. SZYBOWICZ, M.; KORALEWSKI, M.; KAROŃ, J.; MELNIKOVA, L. // Acta Physica Polonica, A.;2015, Vol. 127 Issue 2, p534 

    Micro-Raman spectroscopy was used to studies of naturally occurring biogenic ferritin, synthetic ferritin with magnetic core (magnetoferritin) as well as their several mimetics. We demonstrate the ability of micro-Raman spectroscopy to discriminate between ferritin and magnetoferritin used in...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics