Lattice evolution, ordering transformation and microwave dielectric properties of rock-salt Li3+xMg2–2xNb1-xTi2xO6 solid-solution system: A newly developed pseudo ternary phase diagram

2021 ◽  
Vol 206 ◽  
pp. 116636
Author(s):  
Xing Zhang ◽  
Zixuan Fang ◽  
Hongyu Yang ◽  
Peng Zhao ◽  
Xiao Zhang ◽  
...  
1997 ◽  
Vol 12 (6) ◽  
pp. 1558-1562 ◽  
Author(s):  
Seo-Yong Cho ◽  
Hyuk-Joon Youn ◽  
Kug-Sun Hong ◽  
In-Tae Kim ◽  
Yoon-Ho Kim

Microwave dielectric properties of the solid solution between Ba(Ni1/3Nb2/3)O3 and Ba(Zn1/3Nb2/3)O3 were investigated. Samples were prepared by the conventional mixed oxide method as well as the Pechini method. Sintered samples were analyzed using x-ray diffraction and scanning electron microscopy, and their microwave dielectric properties were measured by the post resonator method. The sample prepared by the Pechini method revealed excellent dielectric properties, i.e., permittivity of 35.6, quality factor of 5700 at 10 GHz, and very small temperature coefficient of resonant frequency. Order-disorder behavior of this solid solution system was found to depend on processing parameters. Variation in microwave dielectric properties was discussed in terms of the order-disorder behavior, chemical composition, mixture rule, etc.


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.


2019 ◽  
Vol 54 (16) ◽  
pp. 10984-10997 ◽  
Author(s):  
I. P. Raevski ◽  
V. V. Titov ◽  
Haydn Chen ◽  
I. N. Zakharchenko ◽  
S. I. Raevskaya ◽  
...  

1995 ◽  
Vol 30 (3) ◽  
pp. 307-316 ◽  
Author(s):  
In-Seon Kim ◽  
Woo-Hwan Jung ◽  
Yoshiyuki Inaguma ◽  
Tetsuro Nakamura ◽  
Mitsuru Itoh

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