Dielectric dispersion of some perovskite zirconates

C. H. Perry, D. J. Mccarthy, G. Rupprecht

The assignment of the normal-mode spectrum in perovskites has been achieved by a comparison of the vibrations of calcium, strontium, barium, and lead titanates and zirconates. In addition, for the antiferro-electric material lead zirconate, about 90% of the value of the low-frequency dielectric constant is the result of a low-frequency optically active mode. © 1965 The American Physical Society.

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Materials
Curve 1
Temperature, K: ~298 Wavelength Range, µm: 8.33-145 Geometry θ'ω': ~0°~0° Composition (weight percent), Specifications, and Remarks: BARIUM ZIRCONATE, BaZrO₃; polished polycrystalline ceramic sample; front-aluminized mirror reference standard; data extracted from smooth curve.
Curve 2
Temperature, K: ~298 Wavelength Range, µm: 8.33-357 Geometry θ'ω': ~0°~0° Composition (weight percent), Specifications, and Remarks: CALCIUM ZIRCONATE, CaZrO₃; polished polycrystalline ceramic sample; front-aluminized mirror reference standard; data extracted from smooth curve.
Curve 3
Temperature, K: ~298 Wavelength Range, µm: 8.33-244 Geometry θ'ω': ~0°~0° Composition (weight percent), Specifications, and Remarks: LEAD ZIRCONATE, PbZrO₃; polished polycrystalline ceramic sample (>2 mm thick); front-aluminized mirror reference standard; data extracted from smooth curve.
Curve 4
Temperature, K: ~298 Wavelength Range, µm: 8.33-141 Geometry θ'ω': ~0°~0° Composition (weight percent), Specifications, and Remarks: STRONTIUM ZIRCONATE, SrZrO₃; polished polycrystalline ceramic sample (>2 mm thick); front-aluminized mirror reference standard; data extracted from smooth curve.