Entropy regulation in LaNbO4-based fergusonite to implement high-temperature phase transition and promising dielectric properties

被引:45
作者
Chen, Deqin [1 ]
Yan, Na [1 ]
Cao, Xuefeng [1 ]
Li, Fengrong [1 ]
Liu, Laijun [1 ]
Shen, Qinghua [2 ]
Zhou, Huanfu [1 ]
Li, Chunchun [1 ,2 ]
机构
[1] Guilin Univ Technol, Coll Mat Sci & Engn, Guangxi Univ Key Lab Nonferrous Met Oxide Elect F, Guilin 541004, Peoples R China
[2] Guilin Univ Technol, Guangxi Key Lab Embedded Technol & Intelligent Sy, Guilin 541004, Peoples R China
来源
JOURNAL OF ADVANCED CERAMICS | 2023年 / 12卷 / 05期
基金
中国国家自然科学基金;
关键词
high-entropy ceramics; microwave dielectric property; ion disorder; far-infrared; CRYSTAL-STRUCTURE; BOND-VALENCE; MICROWAVE; CERAMICS; RAMAN; TRANSFORMATION; PARAMETERS; NIOBATES; MODES; ORDER;
D O I
10.26599/JAC.2023.9220739
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
High-entropy effect is a novel design strategy to optimize properties and explore novel materials. In this work, (La1/5Nd1/5Sm1/5Ho1/5Y1/5)NbO4 (5RNO) high-entropy microwave dielectric ceramics were successfully prepared in the sintering temperature (S.T.) range of 1210-1290 degrees C via a solid-phase reaction route, and medium-entropy (La1/3Nd1/3Sm1/3)NbO4 and (La1/4Nd1/4Sm1/4Ho1/4)NbO4 (3RNO and 4RNO) ceramics were compared. The effects of the entropy (S) on crystal structure, phase transition, and dielectric performance were evaluated. The entropy increase yields a significant increase in a phase transition temperature (from monoclinic fergusonite to tetragonal scheelite structure). Optimal microwave dielectric properties were achieved in the high-entropy ceramics (5RNO) at the sintering temperature of 1270 degrees C for 4 h with a relative density of 98.2% and microwave dielectric properties of dielectric permittirity (epsilon(r)) = 19.48, quality factor (Qxf) = 47,770 GHz, and resonant frequency temperature coefficient (tau(f)) = -13.50 ppm/degrees C. This work opens an avenue for the exploration of novel microwave dielectric material and property optimization via entropy engineering.
引用
收藏
页码:1067 / 1080
页数:14
相关论文
共 62 条
[1]   A novel ceramic matrix composite based on YNbO4-TiO2 for microwave applications [J].
Abreu, Tallison O. ;
Abreu, Roterdan F. ;
do Carmo, Felipe F. ;
de Sousa, Wellington, V ;
Barros, Helenilson de O. ;
de Morais, Jose E., V ;
do Nascimento, Joao P. C. ;
da Silva, Marcelo A. S. ;
Trukhanov, Sergei ;
Trukhanov, Alex ;
Panina, Larissa ;
Singh, Charanjeet ;
Sombra, Antonio S. B. .
CERAMICS INTERNATIONAL, 2021, 47 (11) :15424-15432
[2]   SIMPLIFIED SYSTEMATICS OF THE COMPOUNDS ABX4 (X=O2-,F-) AND POSSIBLE EVOLUTION OF THEIR CRYSTAL-STRUCTURES UNDER PRESSURE [J].
BASTIDE, JP .
JOURNAL OF SOLID STATE CHEMISTRY, 1987, 71 (01) :115-120
[3]   VIBRATIONAL-SPECTRA OF YTTRIUM NIOBATE AND TANTALATE [J].
BLASSE, G .
JOURNAL OF SOLID STATE CHEMISTRY, 1973, 7 (02) :169-171
[4]   BOND-VALENCE PARAMETERS FOR SOLIDS [J].
BRESE, NE ;
OKEEFFE, M .
ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1991, 47 :192-197
[5]   High porosity and low thermal conductivity high entropy (Zr0.2Hf0.2Ti0.2Nb0.2Ta0.2)C [J].
Chen, Heng ;
Xiang, Huimin ;
Dai, Fu-Zhi ;
Liu, Jiachen ;
Lei, Yiming ;
Zhang, Jie ;
Zhou, Yanchun .
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY, 2019, 35 (08) :1700-1705
[6]   Stability and Compressibility of Cation-Doped High-Entropy Oxide MgCoNiCuZnO5 [J].
Chen, Jian ;
Liu, Weixin ;
Liu, Junxiu ;
Zhang, Xiaoliang ;
Yuan, Mingzhi ;
Zhao, Yunlei ;
Yan, Jiejuan ;
Hou, Mingqiang ;
Yan, Jinyuan ;
Kunz, Martin ;
Tamura, Nobumichi ;
Zhang, Hengzhong ;
Yin, Zhoulan .
JOURNAL OF PHYSICAL CHEMISTRY C, 2019, 123 (29) :17735-17744
[7]   EFFECT OF SN SUBSTITUTION ON CATION ORDERING IN (ZR1-XSNX)TIO4 MICROWAVE DIELECTRIC CERAMICS [J].
CHRISTOFFERSEN, R ;
DAVIES, PK ;
WEI, XH ;
NEGAS, T .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1994, 77 (06) :1441-1450
[8]   Crystallographic and Raman spectroscopic studies of microwave dielectric ceramics Ba(Ca1/3Nb2/3)O3 [J].
Deng, Jinxia ;
Chen, Jun ;
Yu, Ranbo ;
Liu, Guirong ;
Xing, Xianran .
JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 472 (1-2) :502-506
[9]   (Hf0.25Zr0.25Sn0.25Ti0.25)O2 high-entropy ceramics and their microwave dielectric characteristics [J].
Ding, Yi Han ;
Liu, Lu ;
Guo, Rui Ze ;
Li, Lei ;
Chen, Xiang Ming .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2022, 105 (11) :6710-6717
[10]   Structure and microwave dielectric characteristics of Hf1-xTixO2 ceramics [J].
Ding, Yi Han ;
Liu, Lu ;
Yang, Zi Jing ;
Li, Lei ;
Chen, Xiang Ming .
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2022, 105 (02) :1127-1135