scholarly journals Pliniusite, Ca5(VO4)3F, a new apatite-group mineral and the novel natural ternary solid-solution system pliniusite–svabite–fluorapatite

2021 ◽  
2011 ◽  
Vol 01 (02) ◽  
pp. 243-249
Author(s):  
JENNY Y. Y. WONG ◽  
ZUO-GUANG YE

In order to develop new lead-free pieozoelectric/ferroelectric materials, the y( K0.5Na0.5 ) NbO3 – (1 - y)[(1 - x) Bi0.5K0.5TiO3 – x BaTiO3 ] solid solution system is synthesized and the partial ternary phase diagram in the KNN-rich region with compositions of y = 0.98 to y = 0.96 is established. All the compositions studied show a gradual phase change from a tetragonal to an orthorhombic structure as the BT component increases. A mixture of tetragonal and orthorhombic phases is found in the composition range of x = 0.25 to 0.60 and y = 0.97, and x = 0.50 to 0.75 and y = 0.96, indicating a ternary morphotropic phase boundary region. The piezoelectric and ferroelectric properties of the 0.97(KNN)–0.03[0.60BKT–0.40BT] ceramics are characterized. The increase in remnant polarization as compared with pure KNN shows improved ferroelectricity by forming the ternary solid solution.


2016 ◽  
Vol 42 (8) ◽  
pp. 9347-9353
Author(s):  
Dongfang Pang ◽  
Chao He ◽  
Xiuzhi Li ◽  
Shujuan Han ◽  
Shilie Pan ◽  
...  

2015 ◽  
Vol 35 (7) ◽  
pp. 2033-2040 ◽  
Author(s):  
Dongfang Pang ◽  
Chao He ◽  
Shujuan Han ◽  
Shilie Pan ◽  
Xifa Long ◽  
...  

1982 ◽  
Vol 17 (10) ◽  
pp. 1233-1239 ◽  
Author(s):  
H. Berger ◽  
B. Christ ◽  
J. Troschke

2008 ◽  
Vol 47 (9) ◽  
pp. 7678-7684 ◽  
Author(s):  
Satoshi Wada ◽  
Momoyo Nitta ◽  
Nobuhiro Kumada ◽  
Daisuke Tanaka ◽  
Masahito Furukawa ◽  
...  

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