Strong Influence of the Diffuse Component on the Lattice Dynamics in Pb(Mg_<1/3>Nb_<2/3>)O_3(Condensed Matter : Structure, Mechanical and Thermal Properties)
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概要
- 論文の詳細を見る
The temperature and zone dependence of the lattice dynamics in Pb(Mg_<1/3>Nb_<2/3>)O_3 is characterized using neutron inelastic scattering. Through a detailed study of the phonon lineshape and a comparison of the structure factors to SrTiO_3, we conclude that the coupling between the acoustic and optic modes is weak. However, based on a direct comparison between the (110) Brillouin zone where the diffuse scattering is strong to the (220) zone where the diffuse scattering is weak, a strong coupling between the diffuse component and low-energy acoustic phonon mode is observed. We conclude that the coupling to the diffuse component is the reason for several recent conflicting interpretations of the lattice dynamics based on data from zones with a strong diffuse component.
- 社団法人日本物理学会の論文
- 2005-11-15
著者
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Shirane G.
Physics Department, Brookhaven National Laboratory
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Birgeneau R.
Ucberkeley
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Birgeneau R.
Department Of Physics And Cneter For Materials Science And Engineering
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Birgeneau R.
Department Of Physics University Of Toronto Toronto
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Birgeneau R.
Department Of Physics University Of Toronto
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STOCK C.
Department of Physics, University of Toronto
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LUO H.
Shanghai Institute of Ceramics, Chinese Academy of Sciences
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VIEHLAND D.
Department of Materials Science and Engineering, Virginia Tech.
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LI J.
Department of Materials Science and Engineering, Virginia Tech.
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SWAINSON I.
National Research Council, Chalk River
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Stock C.
Department Of Physics University Of Toronto
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Li J.
Department Of Hematology Shanghai Institute Of Hematology Ruijin Hospital Affiliated With Shanghai S
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Swainson I.
National Research Council Chalk River
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Viehland D.
Department Of Materials Science And Engineering Virginia Tech.
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Shirane G.
Physics Department Brookhaven National Laboratory
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Li J.
Department Of Materials Science And Engineering Virginia Tech.
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Luo H.
Shanghai Institute Of Ceramics Chinese Academy Of Sciences
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