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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Chemistry of materials 5 (1993), S. 1221-1226 
    ISSN: 1520-5002
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physics of the Earth and Planetary Interiors 16 (1978), S. 223-231 
    ISSN: 0031-9201
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Physics of the Earth and Planetary Interiors 7 (1973), S. 437-444 
    ISSN: 0031-9201
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 18 (1968), S. 734-737 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Synthetic and very pure single crystals of nickel iodine boracite up to 10 mm in their largest dimensions were grown by a chemical transport process and investigated using a selfcompensating recording torsion balance. Below 60°K ferromagnetic behaviour was observed. In the (100) plane large tetragonal torsion moments having frequent discontinuities were observed.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 250 (1974), S. 479-480 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] In our present work, sintered titanomagnetite, Fe3-xTix04 (with x=0.5, denoted TM50) was used to prepare simulated average basalt by dispersing a known quantity of a selected particle size into a silicate nonmagnetic matrix (powdered Pyrex or silica). This study was undertaken in order to ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Fresenius' Zeitschrift für analytische Chemie 217 (1966), S. 340-344 
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Ein colorimetrisches Verfahren zur Bestimmung von Chloridionen wird beschrieben, das auf der Entfärbung des Quecksilber(II)-komplexes mit Diphenylcarbazon in einer wäßrigen Glycerinlösung beruht. Zur Bestimmung von Chloridspuren in Eisenoxid wurde ihre Freisetzung durch Wasserstoffreduktion bei einer Temperatur von 950° C verwendet. Der dabei entstehende Chlorwasserstoff wird quantitativ in einer 5 · 10−4 m Natronlauge aufgefangen und colorimetrisch nach der hier vorgeschlagenen Arbeitsweise bestimmt. Die Ergebnisse sind gut reproduzierbar; der mittlere relative Fehler überschreitet nicht 4%.
    Notes: Summary A method is described for the determination of traces of chloride in iron oxide. The procedure comprises hydrogen reduction of the sample at 950° C, absorption of the hydrogen chloride formed by sodium hydroxide solution and colorimetric determination of the chloride by means of decolorizing the mercury(II)-diphenylcarbazone complex. The results are well reproducible; the average relative error is less than 4%.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 12 (1962), S. 148-158 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Abstract Описан метод выращивания монокристаллов магнетита (Fe3O4), основанный на транспорте через газообразную фазу в запаянной кварцевой ампуле. Рост осуществляется при температуре 800°C, т. е. примерно на 750°C ниже точки плавления магнетита. Полученные кристаллы имеют форму октаэдров, дотстигают величины до 2 мм, и, как правило, ограничены плоскими блестящими поверхностями. Кроме наиболее часто встречающихся плоскостей октаэдров {111}, у них появляются еще плоскости {110}, {hkk} a {hhk}. Качество поверхности позволяет исследовать доменную структуру при помощи коллоидной техники без всякой дополнительной обработки.
    Notes: Abstract The paper describes the preparation of single crystals of magnetite (Fe3O4) by transport over the gaseous phase, in a sealed quartz ampoule. Growth occurs at 800°C, i.e. about 750°C below the melting point of magnetite. The crystals obtained, which are octahedral in form, are up to 2 mm in size; as a rule they are bounded by straight, shiny surfaces. Apart from the most frequent surfaces of an octahedron {111} we also see {110}, {hkk} and {hhk} surfaces. The quality of the surface enables the domain structure to be studied by the colloid technique without any further treatment.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 15 (1965), S. 64-70 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Zusammenfassung 1. Es wurde gezeigt, da\ durch Aufwachsen epitaxialer Schichten an von {100}-FlÄchen begrenzten Eisenwhiskern grö\ere KristÄllchen vonα-Eisen mit glatten kristallographischen FlÄchen mit den gleichen Indizes hergestellt werden können Ein Aufwachsen an {110}-FlÄchen führte in keinem Fall zu glatten OberflÄchen Es wurden folgende Bedingungen für einen chemischen Transport gefunden, die für eine Herstellung von Kristallen durch ein orientiertes Aufwachsen geeignet sind: Temperatur der Wachstumszonet 1〉830
    Notes: Abstract The method of chemical transport is used for preparing crystals ofα-iron. The epitaxial growth of iron on iron seed crystals (whiskers) is studied during transport in closed quartz ampoules. The influence of a change in characteristic conditions, i.e. of the temperature of the growth zone, the difference in temperatures of the reaction and growth zones, the distance between the whiskers and the source, and the kind and concentration of the transport agent, on the quality of the surface of the grown layer is investigated. It was found that the method of chemical transport can be used to prepare larger crystals, bounded by smooth mirror-like surfaces of the same orientation, by the growth of new layers on the seed whiskers with external limitation by the {100} surfaces. Thin (≃ 10 Μ) plate-like crystals regularly appeared in ampoules filled with hydrogen bromide.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 16 (1966), S. 837-841 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Ferromagnetic resonance measurements were performed in single crystals of α-iron in the form of thin platelets. These platelets were grown from the vapour phase; their thickness was several microns. The frequency used in the measurements was in the region of 20 to 72 GHz and the samples were statically magnetized parallel to the plane of the platelet. By comparing the line-widths obtained from measurements with a macroscopic theory of the line-shape the values of the frequency-independent Landau-Lifšic damping constant (λ=4·2×107 rad/sec) and surface anisotropyK s = 0·03 erg/cm2) were evaluated.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Czechoslovak journal of physics 12 (1962), S. 723-724 
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Type of Medium: Electronic Resource
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