Results 161 to 170 of about 4,361 (214)

On the domain structure of kscn

Ferroelectrics, 1988
Abstract The domain structure of plate-like KSCN crystals has been studied between room temperature and 150[ddot]C. There are 4 different domains due to the symmetry reduction 14/mcm (D 18 4h ) to Pbcm (D 11 2 h) at Tc = 140[ddot]C. Two different types of pattern were observed: Lense shaped patterns which correspond to the 90[ddot] domains and curved ...
W. Schranz, T. Streuselberger, A. Fuith, H. Warhanek, M. Götzinger   +4 more
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Crystallization of Sulphides in KSCN Melts

Crystal Research and Technology, 1982
AbstractThe melt of potassium thiocyanate can be used as solvent and as supplier of sulphur for the preparation of crystals of sulphides and complex sulphosalts. The solubilities of some sulphides in the KSCN melt were determined at 250°C. Small crystals of sulphides of Cu, Ag, Tl, Hg, Pb, Ni and of ternary As‐ and Sb‐sulphosalts of these metals could ...
P. Bohac, V. Tanner, A. Gaeumann
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Structure Analysis of the Phase Transition in KSCN

Journal of the Physical Society of Japan, 1987
Crystal structures of KSCN are investigated with an X-ray diffraction method at several temperatures in the orthorhombic and the tetragonal phases. The nature of the order-disorder transition for SCN - ions is confirmed above and below the transition temperature.
Seishi Yamamoto, Makoto Sakuno, Yasuhiro Shinnaka   +2 more
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Computer simulations of domains formation in KSCN

Ferroelectrics, 1997
Abstract A two dimensional model of KSCN crystal has been used for molecular dynamics simulations of the phase transition. Diffuse scattering function calculated during simulations shows that the correlation lenght of ordering SCN particles remains constant close below Tc but it grows when one approaches Tc from above.
Z. Lodziana, K. Parliński
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The Electrochemistry of Chromium (III) in Molten KSCN

Journal of The Electrochemical Society, 1986
Etudes de la reduction d'ion chrome (III), dans du thiocyanate de potassium fondu, par voltammetrie cyclique, avec une electrode a disque tournant et a l'aide de la methode du saut de potentiel.
R. J. Potter, D. J. Schiffrin
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KSCN and its phase transition at 415K

Ferroelectrics, 1990
Abstract The order-disorder phase transition of KSCN at 415K has been investigated by birefringence-, ultrasonic-, dielectric-and NMR-measurements. A pseudospin model which takes into account the interaction between the four pseudospins S1, S2, S3 and S4 corresponding to the four SCN-ions in the unit cell has been calculated and used to describe the ...
A. Fuith, H. Kabelka, W. Schran, H. Warhanek, R. Blinc, J. Kroupa, V. Janovec   +6 more
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New data on the phase transition in KSCN

Ferroelectrics, 1988
Abstract The structural phase transition in single crystals of KSCN which can be classified as improper ferroelastic, has been investigated by accurate birefringence measurements, Brillouin scattering and far infrared spectroscopy. The optical study showed the transition to be of first order.
J. Kroupa, J. Fousek, A. Fousková, J. Petzelt, M. Pavel, S. Kamba, A. Fuith, H. Warhanek   +7 more
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The order-disorder phase transition in kscn

Ferroelectrics, 1991
Abstract The order-disorder phase transition in KSCN near 417.5 K, which is connected with the head-tail orientation of the linear SCN-molecules, is investigated by diffuse neutron scattering techniques. The results show a transition from a long range ordered structure to a short range ordered state which persists up to temperatures near the melting ...
O. Blaschko, W. Schwarz, W. Schranz, A. Fuith   +3 more
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Symmetry analysis of domain structure in KSCN crystals

Ferroelectrics, 1989
Abstract Basic symmetry properties of domain states, domain pairs, domain twins and walls in KSCN crystals are examined by group theoretical methods. Relations between domain states and domain pairs are expressed in matrix form and by permutation representation.
V. Janovec, W. Schranz, H. Warhanek, Z. Zikmund   +3 more
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The vibrational spectrum of crystalline KSCN

Journal of Applied Spectroscopy, 1965
The spectrum is reported for the range 700 to 5000 cm−1; the internal modes of the SCN− ion are interpreted in terms of the Cs local symmetry group. The combinations of internal and external (lattice) modes are examined in terms of theD2h factor group. The frequency of the translational mode is found to be 20 cm−1.
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