Y(Mg1/2Sn1/2)O3陶瓷的声子特性与晶体结构剖析
5 浏览量
更新于2024-08-26
收藏 596KB PDF 举报
本文主要探讨了Y(Mg1/2Sn1/2)O3 (YMS)陶瓷的声子特性、晶体结构及其本征性质。作者采用了一种传统的固态反应法合成这种陶瓷材料。实验通过X射线衍射(XRD)技术深入研究了YMS的晶体结构，确认了其具有单斜晶系P21/n对称性，这是理解其微观结构的关键。
拉曼散射光谱和傅立叶变换远红外(FTIR)反射光谱被用来揭示声子特性，即晶格振动模式。这些实验结果展示了三种不同的振动特征：A位的Y阳离子、B位的有序结构，其中Mg2+和Sn4+占据1:1的比例，以及O离子的振动。这有助于分析材料内部的振动动态和能量传递。
在远红外光谱中，观察到的八个模式与不同原子结构的振动模式相对应，提供了更细致的结构信息。为了进一步分析材料的电学性质，作者利用了四参数半量子模型(FPSQ)和Clausius-Mossotti方程，结合损耗系数与频率的关系，计算了介电常数（εr）和tanδj/ω，即介电损耗因子。通过Kramers-Kronig分析，作者还从实部和虚部的介电常数中获得了完整的电磁响应特性。
这项研究深入剖析了YMS陶瓷的物理性质，对于理解其在电子器件、光学和传感器等领域可能的应用具有重要意义。通过将理论模型与实验数据相结合，作者能够揭示材料的内在机制，并为设计高性能的功能陶瓷材料提供有价值的信息。
Phonon characteristics, crystal structure, and
intrinsic properties of a Y(Mg
1/2
Sn
1/2
)O
3
ceramic
Chao Xing,
a
Jianzhu Li,
a
Huiling Chen,
a
Hengyang Qiao,
a
Jun Yang,
a
Helei Dong,
b
Haiqing Sun,
b
Jing Wang,
b
Xunqian Yin,
a
Ze-Ming Qi
c
and Feng Shi
*
a
Herein, a Y(Mg
1/2
Sn
1/2
)O
3
(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 P2
1
/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
Mg
2+
:Sn
4+
), and O ions. The eight far-infrared spectrum modes corresponded to different atomic
structures of the vibration modes. Dielectric properties (3
r
and tan d
j
/u) 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
¨
onig analysis.
1. Introduction
Rare-earth based microwave dielectric ceramics (MWDCs), with
the formula of A(B
0
1/2
B
00
1/2
)O
3
(A ¼ La, Ce, Nd, Pr, and Sm; B
0
¼
Zn, Ni, Mg, and Co; and B
00
¼ Ti, Sn, and Zr), have been inves-
tigated for their potential application as dielectric resonators
(DRs) and lters due to their suitable permittivities (3
r
), high
quality factor (Q), and near zero temperature coefficient of
resonant frequency (s
f
). Moreover, they possess monoclinic
structure and P2
1
/n space group with a 1 : 1 ordered structure at
the B-site.
1–4
The crystal structures, dielectric properties, and vibrational
spectra of the A(B
0
1/2
B
00
1/2
)O
3
rare-earth based MWDCs, espe-
cially those of the lanthanide rare-earth ceramics, have been
studied by many researchers.
5–8
Some studies were mainly
concentrated on the reduction of their sintering temperatures
and modication of their properties via additives such as ZnO–
B
2
O
3
–SiO
2
(ref. 9) and Ni
2+
.
10
However, the Y-based rare-earth
ceramics with the structure A(B
0
1/2
B
00
1/2
)O
3
have not been re-
ported to date. The vibrator parameters of Y(Mg
1/2
Sn
1/2
)O
3
(YMS) ceramic have not been investigated by Raman scattering
spectroscopy and Fourier transform far-infrared reection
spectroscopy together, and the intrinsic properties of YMS are
unknown.
In this study, the YMS ceramic was synthesized through
a conventional solid-state sintering technique. X-ray diffraction
and vibrational spectra (via Raman and FTIR spectroscopies)
were obtained. The four-parameter semi quantum (FPSQ)
models were used to calculate the intrinsic properties (dielectric
constant and loss), which were compared with the data calcu-
lated by the Clausius–Mossotti equation (molecular polariz-
abilities), as well as the relationship between the damping
coefficient and the intrinsic dielectric loss. The contributions of
the Raman and IR modes to the properties were analyzed. The
Kramers–Kr
¨
onig (K–K) analysis was performed to obtain the
imaginary and real parts of the dielectric constant to examine
the vibrator parameters of the YMS ceramic. This study may
provide a basis for future research on the structure– property
relationship of rare-earth based A(B
0
1/2
B
00
1/2
)O
3
-type MWDCs.
2. Experimental
Y(Mg
1/2
Sn
1/2
)O
3
ceramic was synthesized using the conven-
tional solid-state reaction method. Y
2
O
3
, MgCO
3
, and SnO
2
powders with the purity of 99.9% in a stoichiometric amount of
Y : Mg : Sn ¼ 2 : 1 : 1 molar ratio were added in a polyethylene
bottle having a zirconia ball for 12 h, dried, and then calcined at
1200
C for 4 h. A er ball-milling for 12 h again, these mixed
powders were dried and pressed on the discs of 15 mm 1 mm;
nally, they were sintered at 1500
C for 4 h.
XRD was performed using a Rigaku D/max-rB X-ray diffrac-
tometer having a Cu-K
a
incident source of the range of 10–80
a
School of Material Science & Engineering, Shandong University of Science and
Technology, Qingdao, 266590, P. R. China. E-mail: sf751106@sina.com.cn; Fax: +86
532 80691718; Tel: +86 532 80691718
b
Science and Technology on Electronic Test & Measurement Laboratory, North
University of China, Taiyuan 030051, P. R. China
c
National Synchrotron Radiation Laboratory, University of Science and Technology of
China, Hefei, 230029, P. R. China
Cite this: RSC Adv.,2017,7,35305
Received 1st May 2017
Accepted 30th June 2017
DOI: 10.1039/c7ra04869f
rsc.li/rsc-advances
This journal is © The Royal Society of Chemistry 2017 RSC Adv.,2017,7, 35305–3531 0 | 35305
RSC Advances
PAPER
Open Access Article. Published on 14 July 2017. Downloaded on 23/11/2017 02:19:31.
This article is licensed under a
Creative Commons Attribution 3.0 Unported Licence.
View Article Online
View Journal
| View Issue
下载后可阅读完整内容，剩余5页未读，立即下载
2021-09-10 上传
点击了解资源详情
2021-03-14 上传
2021-03-14 上传
2022-09-23 上传
2022-07-14 上传
2022-07-14 上传
2021-09-28 上传
weixin_38748556
- 粉丝: 6
- 资源: 925
我的内容管理
展开
最新资源
- C语言数组操作：高度检查器编程实践
- 基于Swift开发的嘉定单车LBS iOS应用项目解析
- 钗头凤声乐表演的二度创作分析报告
- 分布式数据库特训营全套教程资料
- JavaScript开发者Robert Bindar的博客平台
- MATLAB投影寻踪代码教程及文件解压缩指南
- HTML5拖放实现的RPSLS游戏教程
- HT://Dig引擎接口，Ampoliros开源模块应用
- 全面探测服务器性能与PHP环境的iprober PHP探针v0.024
- 新版提醒应用v2：基于MongoDB的数据存储
- 《我的世界》东方大陆1.12.2材质包深度体验
- Hypercore Promisifier: JavaScript中的回调转换为Promise包装器
- 探索开源项目Artifice：Slyme脚本与技巧游戏
- Matlab机器人学习代码解析与笔记分享
- 查尔默斯大学计算物理作业HP2解析
- GitHub问题管理新工具：GIRA-crx插件介绍
