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Transition Energy and Volume Change at Three Transitions in Barium Titanate

G. Shirane、Akitsu Takeda1952-01-01Journal of the Physical Society of Japan

The specific heat and thermal expansion of high purity BaTiO 3 ceramics have been measured at temperatures from -120° to 150°C with the following results:

Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisThermal and Kinetic Analysis

On the Phase Transition in Cuprous Iodide

Shizuo Miyake、Sadao Hoshino、Toshio Takenaka1952-01-01Journal of the Physical Society of Japan

The phase transition and the crystal structures of cuprous iodide (CuI) have been studied by the X-ray and calorimetric measurement Two phase transitions at 369°C and 407°C were found and the corresponding energy and entropy changes were estimated from the specific heattemperature curve. The crystal lattice of γ, β an…

Chalcogenide Semiconductor Thin FilmsAdvanced Semiconductor Detectors and MaterialsCopper-based nanomaterials and applications

Phase Transitions in Solid Solutions of PbZrO3and PbTiO3(II) X-ray Study

G. Shirane、Kazuo Suzuki、Akitsu Takeda1952-01-01Journal of the Physical Society of Japan

The phase diagram of the whole range of the PbZrO 3 -PbTiO 3 system was determined by the dielectric and dilatometric measurements. According to the reason shown in part I, this phase diagram can be divided into three regiors; paraelectric, ferroelectric and antiferroelectric phases. The crystal structure of this syst…

Photorefractive and Nonlinear OpticsOptical and Acousto-Optic TechnologiesFerroelectric and Piezoelectric Materials

A general approach to hysteresis

D. H. Everett、W. I. Whitton1952-01-01Transactions of the Faraday Society

D. H. Everett and W. I. Whitton, Trans. Faraday Soc., 1952, 48, 749 DOI: 10.1039/TF9524800749

Solidification and crystal growth phenomena

Phase Transitions in Solid Solutions of PbZrO3 and PbTiO3 (I) Small Concentrations of PbTiO3

G. Shirane、Akitsu Takeda1952-01-01Journal of the Physical Society of Japan

The dielectric, calorimetric and dilatometric measurements have been made on the solid solutions Pb(Zr-Ti)O 3 which contain small amounts of PbTiO 3 less than 10%. Besides the ordinary Curie point near 220°C, the existence of another transition, for example 140°C in Pb(Zr95-Ti5)O 3 , was confirmed. It seems reasonable…

Optical and Acousto-Optic TechnologiesFerroelectric and Piezoelectric MaterialsPhotorefractive and Nonlinear Optics

Collisional Perturbation of Spin-Orbital Coupling and the Mechanism of Fluorescence Quenching. A Visual Demonstration of the Perturbation

Michael Kasha1952-01-01OpenAlex

A yellow color is produced when two colorless pure liquids, α-chloronaphthalene and ethyl iodide, are mixed, although no chemical reaction occurs. Spectroscopic examination reveals that the lowest singlet→triplet absorption band of the naphthalene molecule is greatly enhanced in intensity in the presence of the iodide…

Magnetism in coordination complexesLanthanide and Transition Metal ComplexesPhotochemistry and Electron Transfer Studies

Electrical Conductivity of Silver Sulfide

Malcolm H. Hebb1952-01-01OpenAlex

Mixed electronic and ionic conduction in silver sulfide is examined. The importance of terminal conditions which may affect the ratio of ionic to electronic currents in experimental measurements is emphasized. In particular, either the electronic or ionic components can be completely suppressed. This is the basis of a…

Solid-state spectroscopy and crystallographyAdvanced Physical and Chemical Molecular InteractionsChemical Thermodynamics and Molecular Structure