Journal of Raman SpectroscopyGRZECHNIK A,WOLF G H,MCMILLAN P F.Raman scattering study of SrTiO3 at high pressure.J. Raman Specf. 1997Grzechnik A, Wolf G H and McMillan P F 1997 Raman scattering study of SrTiO3 at high pressure J. Raman Spectrosc. 28 885-9...
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Raman spectra in SrTiO 3 single crystals were measured. In the ferroelectric phase below T c = 24 K in SrTi 18 O 3, two modes were observed to soften on heating towards T c = 24 K. These modes are assigned as the two split components of the ferroelectric soft E u -symmetry mode ...
Raman shift of MoS2 二氧化硅/硅基底二硫化钼薄膜 蓝宝石基底二硫化钼薄膜 单层MoS2 多层MoS2 span font-size:medium;background-color:#fafafa;"="" style="margin-top: 0px; margin-bottom: 0px; color: rgb(0, 0, 0);" 价格说明 价格:商品在爱采购的展示标价,具体的成交价格可能因商品参加活动等情况发生...
Very recently, the lattice dynamics1 and the Raman spectra of SrO have been successfully explained on the basis of a nonlinear shell model. It is shown that a modified version of this model theory can be applied to the case of SrTiO3. The importance of the polarizability of the oxygen ion...
Raman谱图中峰的高度越高,说明瓷体的半导化程度越差,图3表明LazO.添加量极高或 极低均影响SrTiO3双功能陶瓷的半导化.由图4可见,随着L弛O3添加量的增大.晶格参数 先是增大之后减小,mole分数约为0.6%时最大.在强还原性烧结气氛下,施主添加量为0的 瓷体中可以认为只存在本征氧挥发,缺陷反应如下: 1 O.O2(g...
Size effects of quantum paraelectric SrTiO 3 particles were studied by Raman scattering. The particles were synthesized by a sol-gel method. The particle sizes were controlled by the firing temperatures and determined by the X-ray analysis to range from 12 to 44 nm in diameter. The soft mode...
采用简单的固相合成法得到Sr Ti O3纳米粉,合成样品的结构,组成和光学性质通过XRD,Raman,TEM和UV-Vis等进行分析测试.以30 W Hg灯为光源,K2Cr2O7水溶液,甲基橙水溶液,以及甲基橙和K2Cr2O7的混合水溶液为模型污染物,考察合成样品的光催化性能.结果表明:所得样品是由55~86 nm的颗粒状物质组成的带隙值为3.02 e V的...
It was found that the soft mode frequencies do not tend toward zero value as the stress or the temperature approaches toward the critical point, though the observed Raman line profile remains always underdamped.doi:10.1080/00150197408234171Sakudo, T....