Volume III/28 is a supplement to volume III/16a+b Ferroelectrics and Related Substances. It also consists of two parts a and b. The present subvolume III/28a contains data on ferroelectric oxides, supplementing III/16a which appeared in 1981. Subvolume III/28b, due in 1990, will cover non-oxides, supplementing III/16b (published in 1982). Reliable data on both pure compounds and solid solutions, published mostly between 1978 and 1986 and some data from the literature up to early 1988 are critically evaluated and included. The dielectric and ferroelectric behaviour, as well as all other properties relevant to the characterization of these substances are presented in tables and figures. About 22,000 references have been surveyed with the aid of a computer. All values are given in SI units. Rapid localization of the required data is facilitated by an alphabetical index of substances and a two-dimensional survey of substances and properties dealt with in both subvolumes III/28a and III/16a.
The first Comprehensive Index of the 6th edition and the New Series of Landolt-Börnstein was published in 1986 as a hardbound 300 page volume presenting keyword indexes in English and German. In order to facilitate the use of the Landolt-Börnstein volumes a low-priced paper bound index was published in 1988, covering the volumes of the New Series published up to spring 1988. It was restricted to an English version only. Furthermore the way of presentation was changed. In its new format the Index can be brought up-to-date easily. It is planned to publish such versions every second year. In the present Comprehensive Index 1990 which replaces the Comprehensive Index 1988, keywords have been added for more than 20 volumes published in the last two years or to be published in 1990. Besides, several improvements have been made in the choice of keywords and cross-references, misprints have been deleted and valuable information has been added. The Index consists of four parts. A list of all volumes published in the 6th edition and the New Series, a list of all special indexes provided in individual volumes, the Index of Keywords (comprising more than 100 pages), a list of all authors who have contributed to the 6th edition and the New Series.
Volume III/28 is a supplement to volume III/16a+b Ferroelectrics and Related Substances. It also consists of two parts a and b. The present subvolume III/28a contains data on ferroelectric oxides, supplementing III/16a which appeared in 1981. Subvolume III/28b, due in 1990, will cover non-oxides, supplementing III/16b (published in 1982). Reliable data on both pure compounds and solid solutions, published mostly between 1978 and 1986 and some data from the literature up to early 1988 are critically evaluated and included. The dielectric and ferroelectric behaviour, as well as all other properties relevant to the characterization of these substances are presented in tables and figures. About 22,000 references have been surveyed with the aid of a computer. All values are given in SI units. Rapid localization of the required data is facilitated by an alphabetical index of substances and a two-dimensional survey of substances and properties dealt with in both subvolumes III/28a and III/16a.
Thermodynamic data for inorganic materials are fundamental for the optimisation of existing process parameters and for investigating suitable parameters for carrying out potential new processes. With the aid of such data, time and costs can be saved by calculating the conditions necessary to produce a material of the required composition and specified purity, with minimum usage of energy and input materials and with minimum release of harmful substances to the environment. The SGTE evaluated data presented here are tabulated values of standard thermodynamic properties (enthalpy of formation and standard entropy at 298.15K, enthalpies and temperatures of transition, heat content) for each substance, together with plotted heat capacity, Gibbs energy and enthalpy of formation functions up to the maximum temperature for which the data for that substance have been evaluated. The data are presented in 3 subvolumes, A: Pure Substances, B: Binary Systems, C: Ternary and Multi-Component Systems.
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