About: Nanostructure, Composition, and Magnetic Behavior of Mechanically Alloyed Fe-Mo

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Iron and molybdenum powder mixture exposed to stepwise mechanical alloying using Fritsch planetary mill in air and in nitrogen atmosphere is studied by X-ray diffraction, Mössbauer spectrometry, electron microscopy, completed by magnetic measurements and differential thermal analysis. The room temperature Mössbauer spectra are interpreted in terms of three contributions. The first contribution is associated with the FeMo nanograin core, which is similar to the FeMo bulk alloy of the same composition, i.e., a ferromagnetic solid solution of Mo in Fe. The increasing milling time contributes to a decrease in grain size. It results in a decrease of the volume fraction of the grain cores and simultaneously to an increase in a volume fraction of the second and the third contributions ascribed to highly defected surface zones and very close surface layers influenced by the atmosphere used during milling. Their behavior can be ferromagnetic and/or paramagnetic, depending on an amount of defects and of oxygen or nitrogen atoms present in the milling atmosphere and influencing the formation of the FeMo+N(+O) mixture. Iron and molybdenum powder mixture exposed to stepwise mechanical alloying using Fritsch planetary mill in air and in nitrogen atmosphere is studied by X-ray diffraction, Mössbauer spectrometry, electron microscopy, completed by magnetic measurements and differential thermal analysis. The room temperature Mössbauer spectra are interpreted in terms of three contributions. The first contribution is associated with the FeMo nanograin core, which is similar to the FeMo bulk alloy of the same composition, i.e., a ferromagnetic solid solution of Mo in Fe. The increasing milling time contributes to a decrease in grain size. It results in a decrease of the volume fraction of the grain cores and simultaneously to an increase in a volume fraction of the second and the third contributions ascribed to highly defected surface zones and very close surface layers influenced by the atmosphere used during milling. Their behavior can be ferromagnetic and/or paramagnetic, depending on an amount of defects and of oxygen or nitrogen atoms present in the milling atmosphere and influencing the formation of the FeMo+N(+O) mixture. (en)
Title	Nanostructure, Composition, and Magnetic Behavior of Mechanically Alloyed Fe-Mo Nanostructure, Composition, and Magnetic Behavior of Mechanically Alloyed Fe-Mo (en)
skos:prefLabel	Nanostructure, Composition, and Magnetic Behavior of Mechanically Alloyed Fe-Mo Nanostructure, Composition, and Magnetic Behavior of Mechanically Alloyed Fe-Mo (en)
skos:notation	RIV/68081723:_____/13:00391735!RIV14-GA0-68081723
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GAP108/11/1350)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Buršík, Jiří Jirásková, Yvonna Turek, Ilja
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	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	90620
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/13:00391735
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Nanostructured material; Mechanical alloying; Magnetic properties; Grain core; Defects (en)
http://linked.open.../riv/klicoveSlovo	Grain core Nanostructured material Mechanical alloying Defects Magnetic properties
http://linked.open...odStatuVydavatele	DE - Spolková republika Německo
http://linked.open...ontrolniKodProRIV	[7A04917E4329]
http://linked.open...i/riv/nazevZdroje	Journal of Superconductivity and Novel Magnetism
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Effects of cores and boundaries of nanograins on structural and physical properties of ball milled and mechanically alloyed iron-based materials.
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	26
http://linked.open...iv/tvurceVysledku	Buršík, Jiří Turek, Ilja Jirásková, Yvonna
http://linked.open...ain/vavai/riv/wos	000323906600058
issn	1557-1939
number of pages	5 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s10948-012-2049-4

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