About: Characterization and thermal behaviour of garnets from almandine-pyrope series at 1200 degrees C

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About: Characterization and thermal behaviour of garnets from almandine-pyrope series at 1200 degrees C Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The natural garnets from almandine (Fe3Al2Si3O12) -pyrope (Mg3Al2Si3O12) series with the iron to magnesium atomic ratio ranging from 0.2 to 1 were characterised and their thermal behaviour at 1200degreesC studied by Fe-57 Mossbauer spectroscopy, X-ray powder diffraction, X-ray fluorescence, DTA, TG and electron microprobe analysis. The pyrope-type samples with a dominant magnesium content at position 24c in the cubic garnet structure undergo oxidative decomposition at 1200degreesC resulting in the formation of the paramagnetic spinel Mg(Al, Fe)(2)O-4 structure with a low iron content, enstatite (Mg, Fe) SiO3 and anorthite CaAl2Si2O8 as the host compound for calcium. Contrary to pyropes, the iron-rich garnets exhibit complete oxidation at 1200degreesC conforming to the formation of magnetically ordered nanocrystalline gamma-Fe2O3 or Mg(Fe, Al)(2)O-4 spinels depending on the initial chemical composition of the garnets. In the reaction products of iron-rich garnets, cordierite (Mg2Al4Si5O18) and anorthit The natural garnets from almandine (Fe3Al2Si3O12) -pyrope (Mg3Al2Si3O12) series with the iron to magnesium atomic ratio ranging from 0.2 to 1 were characterised and their thermal behaviour at 1200degreesC studied by Fe-57 Mossbauer spectroscopy, X-ray powder diffraction, X-ray fluorescence, DTA, TG and electron microprobe analysis. The pyrope-type samples with a dominant magnesium content at position 24c in the cubic garnet structure undergo oxidative decomposition at 1200degreesC resulting in the formation of the paramagnetic spinel Mg(Al, Fe)(2)O-4 structure with a low iron content, enstatite (Mg, Fe) SiO3 and anorthite CaAl2Si2O8 as the host compound for calcium. Contrary to pyropes, the iron-rich garnets exhibit complete oxidation at 1200degreesC conforming to the formation of magnetically ordered nanocrystalline gamma-Fe2O3 or Mg(Fe, Al)(2)O-4 spinels depending on the initial chemical composition of the garnets. In the reaction products of iron-rich garnets, cordierite (Mg2Al4Si5O18) and anorthit (en) Byla studována characterizace a termické chování granátů almandin-pyropové řady při 1200 stupních Celsia. (cs)
Title	Characterization and thermal behaviour of garnets from almandine-pyrope series at 1200 degrees C Characterization and thermal behaviour of garnets from almandine-pyrope series at 1200 degrees C (en) Characterizace a termické chování granátů almandin-pyropové řady při 1200 stupních Celsia (cs)
skos:prefLabel	Characterization and thermal behaviour of garnets from almandine-pyrope series at 1200 degrees C Characterization and thermal behaviour of garnets from almandine-pyrope series at 1200 degrees C (en) Characterizace a termické chování granátů almandin-pyropové řady při 1200 stupních Celsia (cs)
skos:notation	RIV/61989592:15310/04:00002307!RIV/2005/MSM/153105/N
http://linked.open.../vavai/riv/strany	403-410
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM 153100007)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2005
http://linked.open...aciTvurceVysledku	Walla, Jan Zbořil, Radek Mašláň, Miroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Palackého v Olomouci / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	557384
http://linked.open...ai/riv/idVysledku	RIV/61989592:15310/04:00002307
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	maghemite;nanoparticles;thermal decomposition;superparamagnetic relaxation (en)
http://linked.open.../riv/klicoveSlovo	thermal decomposition maghemite nanoparticles superparamagnetic relaxation
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[A245A6C51B82]
http://linked.open...i/riv/nazevZdroje	Hyperfine Interactions
http://linked.open...in/vavai/riv/obor	CI
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...UplatneniVysledku	2004
http://linked.open...v/svazekPeriodika	156
http://linked.open...iv/tvurceVysledku	Zbořil, Radek Mašláň, Miroslav Machala, Libor Martinec, P. Walla, Jan Barčová, K.
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20153100007
issn	0304-3843
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	15310

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