Outstanding piezoelectric properties, phase transitions and domain configurations of 0.963(K0.48Na0.52)(Nb0.955Sb0.045)O3−0.037(Bi0.50Na0.50)HfO3 ceramics

Emerging new phase boundary in potassium sodium-niobate based ceramics

“…28,[64][65][66][67] Recently, our group and Zhang et al found that T R-O can be clearly read from the temperature-dependent imaginary part of dielectric permittivity (e 00 -T) curves of poled KNN-based ceramics. 32,68,69 Fig. 5(a) exhibits the phase diagram of poled KNNS-SZ-xBAZ ceramics that were designed for constructing a typical NPB.…”

Nano-domains in lead-free piezoceramics: a review

“…Generally, the domains exposed by the chemical etching are observed by a scanning electron microscope (SEM). 87,88,131,[221][222][223] Among these methods, TEM and PFM show the remarkable ability to observe and manipulate domain structure, which are widely adopted to detect the domain structure of piezoceramics. 220,224,225 In particular, both two methods allow one to record the variations of domain structure under the external stimulus (e.g., electric field and temperature), greatly benefitting for analyzing the physical mechanisms.…”

“…(c) Reported modification methods and their effects on lead-free piezoceramics' performance. The preparation technology includes the two-step sintering, [83][84][85][86][87][88] RTGG method, 53,63,73,[89][90][91][92][93] new sintering technology, [94][95][96] poling conditions, [97][98][99][100][101][102][103][104][105][106] sintering aids, 107 and single crystal. 78,82,86,108,109 When explaining piezo/ferroelectric properties of lead-free piezoceramics, both intrinsic and extrinsic contributions are considered.…”

Thermally stable high strain and piezoelectric characteristics of (Li, Na, K)(Nb, Sb)O3‐CaZrO3 ceramics for piezo actuators

“…Furthermore, NKN‐based materials with the orthorhombic‐tetragonal PPB structure exhibited high d 33 values (300‐450 pC/N) . An orthorhombic NKN‐based material also displayed excellent piezoelectric properties ( d 33 of 512 pC/N and an electromechanical coupling factor ( k p ) of 0.54) …”