|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Brillouin scattering study in the GaN epitaxial layer 显示文摘 | TAKAGI Y AHART M AZUHATA T | 1996 | Physica B1996，220，： | 1 |
| 2 | Origin of Morphotropic Phase Boundaries in Ferroelectrics显示文摘 | Ahart M Somayazulu M Dera P | 2008 | Nature (London)2008，451，： | 1 |
| 3 | High-pressure measurements of hydrogen phase IV using synchrotron infrared spectroscopy显示文摘 | Zha C S Liu Z Ahart M | 2013 | Phys Rev Lett2013，110，21： | 1 |
| 4 | M, Determining the student behaviors contribu-ting to teacher stress and the relationships between these behav-iors and teacher characteristics显示文摘 | Ahart A | 2004 | Dissertation Abstracts Inter-national Section A : Humanities and Social Sciences2004，，64： | 1 |
| 5 | The Boston Area Anticogulation Trial for Artial Investigators显示文摘 | Ahart RG Rothdart RM | 1990 | New Engl J Med1990，323，9： | 1 |
| 6 | Prenatal ultrasound diagnosis of choledochal cyst显示文摘 | Elrad H Mayden K Ahart S | 1985 | J Ultrasound Med1985，4，： | 1 |
| 7 | Origin of Morpho- tropic Phase Boundaries in Ferroelectrics显示文摘 | Ahart M Somayazulu M Cohen R E | | 0，，： | 1 |
| 8 | Origin of morphotropic phase boundaries in ferroeleetrics显示文摘 | Ahart M Somayazulu M Cohen R E | 2008 | Nature2008，451，： | 1 |
| 9 | Structural transitions in Pb(In_(1/2)Nb_(1/2))O_(3) under pressure显示文摘Room-temperature Raman scattering and x-ray difraction measurements together with first principles calculations were employed to invetigate the behavior of disordered Pb(In_(1/2)Nb_(1/2))O_(3)(PIN)under pressure up to 50GPa.Raman spectra show broad bands but a peak near the 380cm^(-1) increases its intensity with pressure.The linewidth of the band at 550cm^(-1) also increases with pressure,while two of the Raman peaks merge above 6GPa.Above 16 GPa,we observe additional splitting of the band at 50cm^(-1).The pressure evolution of the diffraction patterns for PIN shows obvious Bragg peaks splitting above 16GPa;consistent with a symmetry lowering transition.The transition at 0.5 GPa is identified as a pseudo-cubic to orthorhombic(Pbam)structural change whereas the transition at 16GPa is istructure and associated with changes in linear compresibility and octahedral titling,and the transition at 30 GPa is associated to an orthorhombic to monoclinic change.First-principles calculations indicate that the Pbam structure is ground state with antiferrodisdortion consistent with experiment. | Muhtar Ahart Maddury Somayazulu Seiji Kojima Naohiko Yasuda Sergey Prosandeev Russell J.Hemley | 2015 | Journal of Advanced Dielectrics2015，5，4： | 0 |
| 10 | PRECURSOR DYNAMICS OF Pb(B_(1/2)B0_(1/2))O_(3)-TYPE RELAXOR FERROELECTRICS STUDIED BY BROADBAND MICRO-BRILLOUIN SCATTERING显示文摘This paper reviews the recent progress in the understanding of the dynamics of Pb(B_(1/2)B0_(1/2))O_(3)-type relaxor ferroelectrics using of broadband micro-Brillouin scattering spectroscopy,which covers a large frequency range from 1 to 1000 GHz by a tandem multi-pass FabryPerot interferometer.In contrast to Pb(B_(1/3)B0_(2/3))O_(3)-type relaxors,there is no frustration on the B-site of perovskite structure and the degree of order of B-site cations depends on heat treatment.Remarkable softening of sound velocity and an intense central peak are observed above the Curie temperature TC owing to the polarization°uctuations in polar nanoregions(PNRs).Unlike the Pb(B_(1/3)B0_(2/3))O_(3)relaxors,Pb(B_(1/2)B'_(1/2))O_(3)does not undergoes a typical diffuse phase transition without lead vacancies on A-site which enhances randomfields.For the(1-x)Pb(B_(1/2)B'_(1/2))O_(3-x)PbTiO_(3)solid solutions,the long range polar order increases as the PbTiO_(3)content increases.Nevertheless,a central peak owing to dynamic PNRs still remains even for the composition near the MPB,and a critical slowing down is clearly observed in the vicinity of TC. | SEIJI KOJIMA MUHTAR AHART VENKATASUBRAMANIAN SIVASUBRAMANIAN ALEXEI.A.BOKOV ZUO-GUANG.YE | 2012 | Journal of Advanced Dielectrics2012，2，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员