Chlorine nuclear quadrupole resonance studies of K2IrCl6-K2PtCl6 solid solutions

1971 ◽  
Vol 24 (7) ◽  
pp. 1325 ◽  
Author(s):  
JE Fergusson ◽  
DE Scaife
Keyword(s):  
Solid Solution ◽  
Magnetic Susceptibility ◽  
Solid Solutions ◽  
Solution System ◽  
Chlorine Atoms ◽  
Cubic Lattice ◽  
Solid Solution System ◽  
Quadrupole Resonance ◽  
Pure Compounds ◽  
Nuclear Quadrupole

The cubic lattice parameters for the solid solution system K2IrCl6- K2PtCl6 vary approximately linearly with composition from a0 = 9.765�0.001 Ǻ for K2,IrCl6, to a0 = 9.748�0.001 Ǻ for K2PtCl6. The 35Cl n.q.r, frequencies show shifts from the frequencies observed in the pure compounds, these shifts being approximately linear with composition at each of the temperatures 77�K, 201�K, and 298�K. The shifts in frequency on going from 0-100% Pt are, for the chlorine atoms bonded to the iridium, +93 kHz, and for the chlorine atoms bonded to the platinum, +84 kHz. ��� The infrared stretching frequencies of the MCl62- groups also show shifts which are approximately linear with composition. The extrapolated shifts in going from 0-100% Pt are +11 cm-1 and +4.5 cm-1 for the Pt-Cl and Ir-Cl stretching frequencies, respectively. The n.q.r. and infrared results are best accounted for by small changes in the M-Cl bond lengths within the MCl62- group, with concurrent changes in a0, and possibly also in the positional parameter u. Re-examination of the variation of magnetic susceptibility with composition in the K2IrCl6-K2PtCl6 system is also reported, and reasons proposed for the form of this variation. ��� 35Cl n.q.r. frequencies are reported for Cs2IrCl6.

scholarly journals Акустические аномалии в твердых растворах SrTiO-=SUB=-3-=/SUB=--BiFeO-=SUB=-3-=/SUB=-

2018 ◽  
Vol 60 (1) ◽  
pp. 107
Author(s):  
Е. Смирнова ◽  
А. Сотников ◽  
Н. Зайцева ◽  
H. Schmidt
Keyword(s):  
Phase Diagram ◽  
Solid Solution ◽  
Dielectric Constant ◽  
Solid Solutions ◽  
Solution System ◽  
Temperature Range ◽  
Relaxor State ◽  
Solid Solution System ◽  
Pulse Echo ◽  
Pulse Echo Method

AbstractThe results of acoustic investigations of solid solutions SrTiO_3−BiFeO_3 in the temperature range from 100 to 650 K have been presented. The measurements of the velocity and attenuation of the longitudinal ultrasonic mode at a frequency of 10 MHz were carried out by the pulse-echo method. The observed anomalies in velocity and attenuation correlate with the maxima of the dielectric constant in the temperature range of the relaxor state. In addition, the attenuation peaks in the temperature range 400–600 K, which define Burns and T* temperatures, which are characteristic of relaxors, have been identified. The obtained results have allowed the clarifying of the phase diagram of the solid solution system SrTiO_3−BiFeO_3.

Lattice Parameter Study in the Bi1–xSbx Solid-solution System

1982 ◽  
Vol 17 (10) ◽  
pp. 1233-1239 ◽  
Author(s):  
H. Berger ◽  
B. Christ ◽  
J. Troschke
Keyword(s):  
Solid Solution ◽  
Lattice Parameter ◽  
Parameter Study ◽  
Solution System ◽  
Solid Solution System

Preparation of Barium Titanate–Potassium Niobate Solid Solution System Ceramics and Their Piezoelectric Properties

2008 ◽  
Vol 47 (9) ◽  
pp. 7678-7684 ◽  
Author(s):  
Satoshi Wada ◽  
Momoyo Nitta ◽  
Nobuhiro Kumada ◽  
Daisuke Tanaka ◽  
Masahito Furukawa ◽  
...  
Keyword(s):  
Solid Solution ◽  
Barium Titanate ◽  
Piezoelectric Properties ◽  
Potassium Niobate ◽  
Solution System ◽  
Solid Solution System

Stability of phases in (Ba, Gd)MnO3 solid solution system

2008 ◽  
Vol 26 (2) ◽  
pp. 233-236
Author(s):  
Migaku Kobayashi ◽  
Hidenori Tamura ◽  
Hiromi Nakano ◽  
Hirohisa Satoh ◽  
Naoki Kamegashira
Keyword(s):  
Solid Solution ◽  
Solution System ◽  
Solid Solution System

Nuclear Quadrupole Resonance Studies of Chelated Antimony Complexes. Part III. The Carboxylates: RCO2SbCl4

1986 ◽  
Vol 41 (1-2) ◽  
pp. 179-185
Author(s):  
Claudine Gerard-Dion ◽  
Joyce Rupp-Bensadon ◽  
Edwin A. C. Lucken
Keyword(s):  
Phase Change ◽  
Nuclear Quadrupole Resonance ◽  
Chlorine Atoms ◽  
Resonance Frequencies ◽  
Quadrupole Resonance ◽  
Antimony Complexes ◽  
Quantitative Basis ◽  
Nuclear Quadrupole ◽  
The Difference

The 35Cl, 121Sb and 123Sb resonance frequencies for seventeen tetrachloro(carboxylato)antimony V compounds, RCO2SbCl4, are reported. The results confirm the difference in the effects of the substituent on the equatorial chlorine atoms and the axial chlorine atoms of the SbCl4 group, previously remarked in Parts I and II of this series, and this effect has been put on a more quantitative basis by correlating the observed frequencies with the pK’s of the corresponding acids.The compounds with R = isopropyl and R = cyclopropyl both show a phase change in the region of 140 K which may correspond to reorientation of the substituent about the R - CO2 axis.

Evolution of dielectric properties in the (1−x) PbFe0.5Nb0.5O3–xBaFe0.5Nb0.5O3 solid solution system

2019 ◽  
Vol 54 (16) ◽  
pp. 10984-10997 ◽  
Author(s):  
I. P. Raevski ◽  
V. V. Titov ◽  
Haydn Chen ◽  
I. N. Zakharchenko ◽  
S. I. Raevskaya ◽  
...  
Keyword(s):  
Solid Solution ◽  
Dielectric Properties ◽  
Solution System ◽  
Solid Solution System
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