Издательство Taylor&Francis по журналам "Phase Transitions"
Отображаемые элементы 1-20 из 1251
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(Taylor & Francis Group, 1992-02-01)The proton second moment (M2) and spin-lattice relaxation time (T1) have been measured in (NH4)2ZnBr4 in the range 77–300 K. The room-temperature spectrum shows a structure which disappears around 243 K. The signal is ...
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(Taylor & Francis Group, 1994-06-01)The proton spin-lattice relaxation time (T1) has been measured in methylammonium hexabromoplumbate, (CH3NH3)2PbBr6, in the range 77–450K, and tetramethylammonium (TMA) hexachloroselenate, [N(CH3)4]2SeCl6 in the range ...
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(Taylor & Francis Group, 1987-01-01)Wide-line proton NMR studies on polycrystalline tetramethylammonium tetrachlorozincate have been carried out at high hydrostatic pressures up to 15 kbar in the temperature range 77-300 K and at ambient pressure down to 4.2 ...
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(Taylor & Francis Group, 1993-06-01)
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(Taylor & Francis Group, 1993-01-01)57Fe Mössbauer and magnetization measurements of an iron compound Bi2Sr4Fe3O12, isostructural with the high-Tc superconductor Bi2Sr2Ca2Cu3O10, are made. Fe ions are found to be in the trivalent state from the Mössbauer ...
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(Taylor & Francis Group, 1990-10-01)The previous experiment of high-angle double-crystal X-ray diffraction (HADOX) on the cubic-to-tetragonal transition in BaTiO3 has been extended. It is confirmed with a higher degree of accuracy that the tetragonal crystal ...
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(Taylor & Francis Group, 1994-02-01)X-ray intensities in reciprocal-lattice space can be measured with high resolution in two dimensions by improved high-angle double-crystal X-ray diffractometry (HADOX). The method has been applied to the cubic-to-tetragonal ...
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(Taylor & Francis Group, 1991-08-01)A brief review of the various high pressure studies on the phase transitions in ferroelectric crystals carried out over the past two decades is presented. The theoretical framework in which high pressure studies have to ...
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(Taylor & Francis Group, 1989-06-01)The crystal growth aspect of mica polytypism is reviewed with emphasis on the relationships between the growth mechanisms of the basal faces and the ordering of the unit modules of the mica structure. On synthetic micas, ...
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(Taylor & Francis Group, 1989-02-01)
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(Taylor & Francis Group, 1987-03-01)
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(Taylor & Francis Group, 1996-07-01)From computer simulation data of 3D Lennard-Jones fluids, we present very simple analytical equations of pressure and chemical potential as functions of the temperature and density. By using the standard thermodynamic ...
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(Taylor & Francis Group, 1989-06-01)A comprehensive observation on the growth processes in polytypic crystals of CdI2 grown from solution has been made in situ and correlated with the internal structures of the crystals, determined by X-ray diffraction after ...
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(Taylor & Francis Group, 1987-01-01)A comparative ferroelectric and NMR studies of the systems Li1+5X M1−XO3 and Li1+XM1−XM′XO3 (M=Nb, M′=Ti M = Ta; M′=Ti, Zr, Sn) have indicated that plot of TC versus composition can be qualitatively explained on the basis ...
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(Taylor & Francis Group, 1989-06-01)The structures of the modulated phases of K2SeO4, Rb2ZnCl4, Rb2ZnCl4 and Cs2CdBr4 are compared. Both commensurate and incommensurate modulations are considered. Clear common features can be derived between the polarization ...
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(Taylor & Francis Group, 1989-06-01)An evolution of the 3D Penrose tiling, which leads to a cubic primitive lattice on a side and to a f.c.c. vertices arrangement on the other side, is shown here. Physical implications are suggested.
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(Taylor & Francis Group, 1993-06-01)Polytypism is considered in relation to other notions of crystal substances composed of definite building modules according to the proposed systematics of modular structures. For a given choice of building modules there ...
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(Taylor & Francis Group, 1993-03-01)Susceptibility measurements at temperatures from 55 K to 620 K are reported for the mixed crystals KMn1-xCoxF3 where x 0.10. All the compounds show antiferromagnetism and a transition to a weak ferromagnetic phase below ...
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(Taylor & Francis Group, 1993-03-01)X-ray diffraction measurements of the lattice parameters as a function of temperature are reported for the mixed compounds KMn1-xNixF3 and KMn1-xCoxF3 where x 0.10. From the splitting of the cubic 400 Bragg reflections the ...
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(Taylor & Francis Group, 1987-01-01)The double martensitic transformation in β1 Cu‒Zn alloy was studied by dilatometry and acoustic emission analysis, as represented by root mean square voltage and ring-down counting. The slowly growing banded martensite is ...
Отображаемые элементы 1-20 из 1251