Effect of spatial constraints on the phase evolution of YFeO3-based nanopowders under heat treatment of glycine-nitrate combustion products

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Effect of spatial constraints on the phase evolution of YFeO3-based nanopowders under heat treatment of glycine-nitrate combustion products. / Popkov, V.I.; Almjasheva, O.V.; Nevedomskiy, V.N.; Panchuk, V.V.; Semenov, V.G.; Gusarov, V.V.

In: Ceramics International, Vol. 44, No. 17, 2018, p. 20906-20912.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{08d54f2851ce4b16bd4edfbcedae8a6d,

title = "Effect of spatial constraints on the phase evolution of YFeO3-based nanopowders under heat treatment of glycine-nitrate combustion products",

abstract = "Formation and structural transformations of yttrium orthoferrite crystals have been studied using X-ray diffractometry, M{\"o}ssbauer spectroscopy and transmission electron microscopy combined with electron microdiffraction. Said processes have been studied under heat treatment of glycine-nitrate combustion products. There have been identified formations of three structural yttrium orthoferrite modifications – amorphized hexagonal <h 1>-YFeO 3 (P6 3cm) and nanocrystalline hexagonal h 2-YFeO 3 (P6 3/mmc), as well as nanocrystalline orthorhombic o-YFeO 3 (Pbnm), which are selectively formed depending on available three-dimensional confinements. Based on the analysis of changes in the fluid and size composition formulation, it has been proposed mechanism for formation and transformation of YFeO 3 nanocrystals, including growth stage of h 2-YFeO 3 crystals due to amorphized phase of <h 1>-YFeO 3 up to critical size of about 15 nm and their subsequent transformation into orthorhombic form o-YFeO 3. ",

keywords = "FerritesNanopowders, rare earthsPhase formationPhase transitionsPolymorphism, Ferrites, Nanopowders, rare earths, Phase formation, Phase transitions, Polymorphism",

author = "V.I. Popkov and O.V. Almjasheva and V.N. Nevedomskiy and V.V. Panchuk and V.G. Semenov and V.V. Gusarov",

year = "2018",

doi = "10.1016/j.ceramint.2018.08.097",

language = "English",

volume = "44",

pages = "20906--20912",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier",

number = "17",

}

RIS

TY - JOUR

T1 - Effect of spatial constraints on the phase evolution of YFeO3-based nanopowders under heat treatment of glycine-nitrate combustion products

AU - Popkov, V.I.

AU - Almjasheva, O.V.

AU - Nevedomskiy, V.N.

AU - Panchuk, V.V.

AU - Semenov, V.G.

AU - Gusarov, V.V.

PY - 2018

Y1 - 2018

N2 - Formation and structural transformations of yttrium orthoferrite crystals have been studied using X-ray diffractometry, Mössbauer spectroscopy and transmission electron microscopy combined with electron microdiffraction. Said processes have been studied under heat treatment of glycine-nitrate combustion products. There have been identified formations of three structural yttrium orthoferrite modifications – amorphized hexagonal <h 1>-YFeO 3 (P6 3cm) and nanocrystalline hexagonal h 2-YFeO 3 (P6 3/mmc), as well as nanocrystalline orthorhombic o-YFeO 3 (Pbnm), which are selectively formed depending on available three-dimensional confinements. Based on the analysis of changes in the fluid and size composition formulation, it has been proposed mechanism for formation and transformation of YFeO 3 nanocrystals, including growth stage of h 2-YFeO 3 crystals due to amorphized phase of <h 1>-YFeO 3 up to critical size of about 15 nm and their subsequent transformation into orthorhombic form o-YFeO 3.

AB - Formation and structural transformations of yttrium orthoferrite crystals have been studied using X-ray diffractometry, Mössbauer spectroscopy and transmission electron microscopy combined with electron microdiffraction. Said processes have been studied under heat treatment of glycine-nitrate combustion products. There have been identified formations of three structural yttrium orthoferrite modifications – amorphized hexagonal <h 1>-YFeO 3 (P6 3cm) and nanocrystalline hexagonal h 2-YFeO 3 (P6 3/mmc), as well as nanocrystalline orthorhombic o-YFeO 3 (Pbnm), which are selectively formed depending on available three-dimensional confinements. Based on the analysis of changes in the fluid and size composition formulation, it has been proposed mechanism for formation and transformation of YFeO 3 nanocrystals, including growth stage of h 2-YFeO 3 crystals due to amorphized phase of <h 1>-YFeO 3 up to critical size of about 15 nm and their subsequent transformation into orthorhombic form o-YFeO 3.

KW - FerritesNanopowders, rare earthsPhase formationPhase transitionsPolymorphism

KW - Ferrites

KW - Nanopowders, rare earths

KW - Phase formation

KW - Phase transitions

KW - Polymorphism

UR - http://www.scopus.com/inward/record.url?scp=85051503979&partnerID=8YFLogxK

U2 - 10.1016/j.ceramint.2018.08.097

DO - 10.1016/j.ceramint.2018.08.097

M3 - Article

VL - 44

SP - 20906

EP - 20912

JO - Ceramics International

JF - Ceramics International

SN - 0272-8842

IS - 17

ER -

ID: 34654945