Mechanical behaviour of various polycrystalline CaZrO3 materials

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“…4) was 200 MPa, which was higher than the data previously reported [9]. This could be explained by the Hall-Petch equation,…”

Oxygen diffusion in SrZrO3

“…However, their material contained significant amount of protons. Other authors reported even very high values: De Pretis et al [15] give a value of 2.6 eV for total conductivity at 1073-1473 K. In a recent critical review, Slonimskaya and Belyakov report 2.2 eV [16]. Haile et al [17] pointed to the necessity to know the nonstoichiometry of a perovskite conductor very well, since small deviations may affect the properties of the materials dramatically.…”

Synthesis, characterization and microwave dielectric properties of nanocrystalline CaZrO3 ceramics

“…Several studies have been reported on the use of CaZrO 3 ceramic-based systems for monitoring oxygen [10,11]. Pretis et al [12] reported that undoped calcium zirconate (CaZrO 3 ) ceramic is a p-type semiconductor in air. When doped with oxides such as A1 2 O 3 , Y 2 O 3 and MgO or with a small excess of ZrO 2 or CaO, it becomes predominantly an oxygen-ion conductor [10].…”

“…Calcium zirconate (CaZrO 3 ) ceramic is a potential candidate for mechanical filters [3], coatings [4] and electrical applications such as resonators and capacitors [5][6][7][8] which is a perovskite having general formula ABO 3 , with a Pcmn space group and can be used for capacitors or dielectric resonators for microwave applications due to their low loss tangent (tan δ) and high-dielectric constant (ε r ) [7,8]. It has a dielectric constant around 30, quality factor (Q = 1/tan δ) of about 3000 at about 5.6 GHz, and a temperature coefficient of resonant frequency (τ f ) of −26.5 ppm/ • C when prepared in conventional solid state synthesis [9].…”