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首页> 外文期刊>RSC Advances >Phonon characteristics, crystal structure, and intrinsic properties of a Y(Mg1/2Sn1/2)O3 ceramic
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Phonon characteristics, crystal structure, and intrinsic properties of a Y(Mg1/2Sn1/2)O3 ceramic

机译：Y（Mg 1/2 Sn 1/2 ）O 3 陶瓷的声子特性，晶体结构和内在性能

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摘要

Herein, a Y(Mg1/2Sn1/2)O3 (YMS) ceramic was synthesized using a conventional solid-state reaction method. Crystal structure of YMS was investigated via X-ray diffraction (XRD). Lattice vibrational modes were obtained through Raman scattering spectroscopy and Fourier transform far-infrared (FTIR) reflection spectroscopy to study its phonon characteristics. The main phase of YMS with the monoclinic P21/n symmetry has been certified via XRD. The Raman active modes fitted with the Lorentzian function can be divided into three parts: vibration related to A-site Y cations, B-site (1?:?1 ordered structure of Mg2+?:?Sn4+), and O ions. The eight far-infrared spectrum modes corresponded to different atomic structures of the vibration modes. Dielectric properties (εr and tan?δj/ω) were deduced using the four-parameter semi-quantum model (FPSQ) and Clausius–Mossotti equation, as well as the relationship between the damping coefficient and the intrinsic loss. The imaginary and real parts of the dielectric constant were obtained via the Kramers–Kr?nig analysis.
机译：在此，Y（Mg 1/2 Sn 1/2 ）O 3 （YMS）陶瓷是使用常规的固态反应方法合成的。通过X射线衍射（XRD）研究了YMS的晶体结构。通过拉曼散射光谱和傅立叶变换远红外（FTIR）反射光谱获得了晶格振动模式，以研究其声子特性。单斜面 P 2 1 / n 对称的YMS主相已通过进行了验证/ em> XRD。配有洛伦兹函数的拉曼有源模式可分为三部分：与A位Y阳离子相关的振动，B位（1？：？1 Mg 2 + 的有序结构）。 ？：？Sn 4 + ）和O离子。八个远红外光谱模式对应于振动模式的不同原子结构。介电特性（ε r 和tan？δ j / ω）使用四参数半量子模型（FPSQ）和Clausius-Mossotti方程以及阻尼系数与固有损失。介电常数的虚部和实部是通过Kramers–Kr？nig分析获得的。

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