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  • 1
    Electronic Resource
    Electronic Resource
    Photon multiplicity measurements in nucleus-nucleus collisions at 200 A GeV
    Amsterdam : Elsevier
    Nuclear Physics, Section A 566 (1994), S. 623-628 
    Details
    ISSN: 0375-9474
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0375-9474(94)90708-0
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  • 2
    Electronic Resource
    Electronic Resource
    Deposition of platinum on flux grown HoFeO3 crystals (1989)
    Springer
    Journal of materials science 8 (1989), S. 186-190 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00730720
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  • 3
    Electronic Resource
    Electronic Resource
    Formation of secondary phases and microdiscs on flux-grown HoFeO3 crystals (1986)
    Springer
    Journal of materials science 21 (1986), S. 3625-3632 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Results of optical and scanning electron microscopic and EDAX studies, carried out on structures exhibited by HoFeO3 crystals grown from the PbO-PbF2-B2O3 flux system, are reported. Aluminium and silicon are present as impurities in the crystals studied. EDAX of certain structures indicate formation of magnetoplumbite (PbO · 6Fe2O3) during the flux growth of HoFeO3. Crystallization of HoOF on the HoFeO3 crystal surfaces is also indicated; the process taking place almost at the end of HoFeO3 crystal growth. A variety of microdisc patterns on HoFeO3 crystal surfaces are illustrated. Their formation is attributed to the covering process of impurity phases by the rapidly advancing growth fronts on the HoFeO3 crystal surfaces. Experimental evidence in support of this is offered by exposing the impurity phase buried under the microdisc. Precipitation of the secondary phases during the flux growth of HoFeO3 crystals and their influence on the latter is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02403011
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  • 4
    Electronic Resource
    Electronic Resource
    Formation of secondary phases and microdiscs on flux-grown HoFeO3 crystals (1986)
    Springer
    Journal of materials science 21 (1986), S. 3625-3632 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Results of optical and scanning electron microscopic and EDAX studies, carried out on structures exhibited by HoFeO3 crystals grown from the PbO-PbF2-B2O3 flux system, are reported. Aluminium and silicon are present as impurities in the crystals studied. EDAX of certain structures indicate formation of magnetoplumbite (PbO · 6Fe2O3) during the flux growth of HoFeO3. Crystallization of HoOF on the HoFeO3 crystal surfaces is also indicated; the process taking place almost at the end of HoFeO3 crystal growth. A variety of microdisc patterns on HoFeO3 crystal surfaces are illustrated. Their formation is attributed to the covering process of impurity phases by the rapidly advancing growth fronts on the HoFeO3 crystal surfaces. Experimental evidence in support of this is offered by exposing the impurity phase buried under the microdisc. Precipitation of the secondary phases during the flux growth of HoFeO3 crystals and their influence on the latter is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00553809
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  • 5
    Electronic Resource
    Electronic Resource
    Microhardness measurements on single crystals of flux-grown rare earth perovskites (orthoferrites, orthochromites and aluminates) (1984)
    Springer
    Journal of materials science 19 (1984), S. 2582-2592 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The results of indentation-induced microhardness testing studies of flux-grown single crystals of rare earth orthoferrites, RFeO3 (R=Gd to Er and Yb), rare earth orthochromites RCrO3 (R=La, Eu and Dy), and rare earth aluminates RAlO3 (R=La, Sm, Gd, Eu and Ho) are presented. The variation in the value of microhardness with load is observed to be non-linear in the case of all these materials. It is found that the results are not in accordance with Kick's law. The results have been analysed and the applicability of the idea of materials resistance pressure in the modified law as proposed by Hays and Kendall [Metallography 6 (1973) 275] is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00550813
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  • 6
    Electronic Resource
    Electronic Resource
    Impurity microcrystals as centres of growth in ErFeO3 crystal surfaces (1985)
    Springer
    Journal of materials science 4 (1985), S. 1273-1275 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00723479
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  • 7
    Electronic Resource
    Electronic Resource
    Optical and scanning electron microscopic and energy-dispersive X-ray analytical studies on some typical surface structures of flux-grown DyFeO3 crystals (1987)
    Springer
    Journal of materials science 22 (1987), S. 4484-4498 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The results of optical, scanning electron microscope and qualitative analysis studies conducted on surface structures displayed by flux-grown DyFeO3 crystals are reported. The crystals were grown from PbO-PbF2 B2O3 flux under various conditions. Magnetoplumbite (PbO · 6Fe2O3) is the most favoured secondary phase. Crystallization of DyOF and DyBO3 on the DyFeO3 crystal surfaces also takes place, almost at the end of DyFeO3 crystal growth. Macro- and micro-disc patterns on DyFeO3 and a rare observation of an elliptical disc of material containing lead are illustrated. Metallic platinum deposited on flux-grown DyFeO3 is reported when the crystals were finally cooled in contact with the flux. Additional secondary phases (material containing lead, platinum, PbO · 6Fe2O3, DyBO3) and other imperfections (inclusions, cavities, microcrystals) also occur. The addition of V2O5 to the flux leads to incorporation of traces of vanadium in the DyFeO3 crystals and DYVO4 as a secondary phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01132051
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  • 8
    Electronic Resource
    Electronic Resource
    Typical hillocks and spirals on flux-grown DyFeO3 crystal surfaces (1987)
    Springer
    Journal of materials science 22 (1987), S. 2216-2220 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Multi-sided and almost rectangular growth hillocks on (1 1 0) faces of flux-grown DyFeO3 crystals are illustrated. Some such hillocks exhibit spiral growth layers originating from the summits of hillocks. Spiral growth layers originating from more than one initiation centre interact, giving rise to closed loop, interlocked and interlaced or other complex growth formations. The origin of the multi-sided hillocks is attributed to preferential growth at the sites of screw dislocations in DyFeO3 crystals. Defects other than screw dislocations also stimulate growth on (1 1 0) faces of DyFeO3 crystals. An example of this is offered. The mechanism of independent growth on (1 1 0) faces of these crystals is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01132963
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  • 9
    Electronic Resource
    Electronic Resource
    Secondary phases and their role in the development of microdiscs on flux-grown ErFeO3 crystal surfaces (1986)
    Springer
    Journal of materials science 21 (1986), S. 1609-1614 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract The results of scanning electron microscope and qualitative element analysis studies, carried out on some typical structures exhibited by flux-grown ErFeO3 crystals grown from PbO-PbF2-B2O3 flux systems, are reported. Aluminium is present as an impurity in the crystals studied. Qualitative analysis of certain structures indicates the formation of magnetoplumbite (PbO · 6Fe2O3) during the flux growth of ErFeO3. Microdisc patterns are interpreted as resulting from the covering of such formations by the rapidly advancing growth fronts on the ErFeO3 crystal surfaces. The crystallization of ErOF and ErBO3 crystals on the ErFeO3 crystal surfaces is also indicated by the qualitative analysis. Precipitation of the impurity phases during the flux growth of ErFeO3 crystals and its effects on the development of the latter is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01114715
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  • 10
    Electronic Resource
    Electronic Resource
    Microstructural, etching and hardness studies on flux-grown KNiF3 crystals (1985)
    Springer
    Journal of materials science 20 (1985), S. 3949-3956 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Surface structures on {100} faces of flux-grown KNiF3 crystals are reported. Etching experiments establish HNO3 to be a dislocation etchant for the crystals. The etching behaviour of the HNO3-KNiF3 surface system is investigated. The results obtained on the effect of etching time and etchant concentration on lateral extension and depth of dislocation etch pits are reported. It is observed that the etchant is rendered passive after some period of initial etching. Indentation-induced hardness testing studies suggest a Vickers microhardness value in the range of (2.93 to 3.50)×102 kg mm−2, and the response of indentation to load is in accordance with Kick's Law.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00552384
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