Aerosol nanoparticles in the Fe <inf>1-x</inf>Cr <inf>x</inf> system: Room-temperature stabilization of the σ phase and σ→α -phase transformation

M. Gich; E. A. Shafranovsky; A. Roig; A. Ślawska-Waniewska; K. Racka; Ll Casas; Yu I. Petrov; E. Molins; M. F. Thomas

doi:10.1063/1.1946907

Aerosol nanoparticles in the Fe <inf>1-x</inf>Cr <inf>x</inf> system: Room-temperature stabilization of the σ phase and σ→α -phase transformation

M. Gich, E. A. Shafranovsky, A. Roig, A. Ślawska-Waniewska, K. Racka, Ll Casas, Yu I. Petrov, E. Molins, M. F. Thomas

Departament de Geologia

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The production and structural characterization of gas-evaporated nanoparticles in the Fe1-x Crx system, with 0<x<0.83 are reported. The results show that for x∼0.5 the metastable σ-FeCr can be stabilized and it constitutes up 60 wt % of the material. The sample with the highest σ-FeCr content is further analyzed to study the structural and the magnetic properties of this phase and its thermal stability. The σ-FeCr phase is weakly magnetic with an average magnetic moment of 0.1 μB per Fe atom and a Curie temperature below ∼60 K. It is stable up to 550 K where it starts to transform to bcc-FeCr. Annealing at 700 K yields Cr2 O3 due to Cr surface segregation and affects the magnetic behavior of the system, which is dominated by interparticle interactions. © 2005 American Institute of Physics.

Idioma original	Anglès
Número d’article	024303
Revista	Journal of Applied Physics
Volum	98
Número	2
DOIs	https://doi.org/10.1063/1.1946907
Estat de la publicació	Publicada - 15 de jul. 2005

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10.1063/1.1946907

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Gich, M., Shafranovsky, E. A., Roig, A., Ślawska-Waniewska, A., Racka, K., Casas, L., Petrov, Y. I., Molins, E., & Thomas, M. F. (2005). Aerosol nanoparticles in the Fe <inf>1-x</inf>Cr <inf>x</inf> system: Room-temperature stabilization of the σ phase and σ→α -phase transformation. Journal of Applied Physics, 98(2), Article 024303. https://doi.org/10.1063/1.1946907

@article{8144dcd8de8743778b98cb19af935150,

title = "Aerosol nanoparticles in the Fe 1-xCr x system: Room-temperature stabilization of the σ phase and σ→α -phase transformation",

abstract = "The production and structural characterization of gas-evaporated nanoparticles in the Fe1-x Crx system, with 0<x<0.83 are reported. The results show that for x∼0.5 the metastable σ-FeCr can be stabilized and it constitutes up 60 wt % of the material. The sample with the highest σ-FeCr content is further analyzed to study the structural and the magnetic properties of this phase and its thermal stability. The σ-FeCr phase is weakly magnetic with an average magnetic moment of 0.1 μB per Fe atom and a Curie temperature below ∼60 K. It is stable up to 550 K where it starts to transform to bcc-FeCr. Annealing at 700 K yields Cr2 O3 due to Cr surface segregation and affects the magnetic behavior of the system, which is dominated by interparticle interactions. {\textcopyright} 2005 American Institute of Physics.",

author = "M. Gich and Shafranovsky, {E. A.} and A. Roig and A. {\'S}lawska-Waniewska and K. Racka and Ll Casas and Petrov, {Yu I.} and E. Molins and Thomas, {M. F.}",

year = "2005",

month = jul,

day = "15",

doi = "10.1063/1.1946907",

language = "English",

volume = "98",

journal = "Journal of Applied Physics",

issn = "0021-8979",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Aerosol nanoparticles in the Fe 1-xCr x system: Room-temperature stabilization of the σ phase and σ→α -phase transformation

AU - Gich, M.

AU - Shafranovsky, E. A.

AU - Roig, A.

AU - Ślawska-Waniewska, A.

AU - Racka, K.

AU - Casas, Ll

AU - Petrov, Yu I.

AU - Molins, E.

AU - Thomas, M. F.

PY - 2005/7/15

Y1 - 2005/7/15

N2 - The production and structural characterization of gas-evaporated nanoparticles in the Fe1-x Crx system, with 0<x<0.83 are reported. The results show that for x∼0.5 the metastable σ-FeCr can be stabilized and it constitutes up 60 wt % of the material. The sample with the highest σ-FeCr content is further analyzed to study the structural and the magnetic properties of this phase and its thermal stability. The σ-FeCr phase is weakly magnetic with an average magnetic moment of 0.1 μB per Fe atom and a Curie temperature below ∼60 K. It is stable up to 550 K where it starts to transform to bcc-FeCr. Annealing at 700 K yields Cr2 O3 due to Cr surface segregation and affects the magnetic behavior of the system, which is dominated by interparticle interactions. © 2005 American Institute of Physics.

AB - The production and structural characterization of gas-evaporated nanoparticles in the Fe1-x Crx system, with 0<x<0.83 are reported. The results show that for x∼0.5 the metastable σ-FeCr can be stabilized and it constitutes up 60 wt % of the material. The sample with the highest σ-FeCr content is further analyzed to study the structural and the magnetic properties of this phase and its thermal stability. The σ-FeCr phase is weakly magnetic with an average magnetic moment of 0.1 μB per Fe atom and a Curie temperature below ∼60 K. It is stable up to 550 K where it starts to transform to bcc-FeCr. Annealing at 700 K yields Cr2 O3 due to Cr surface segregation and affects the magnetic behavior of the system, which is dominated by interparticle interactions. © 2005 American Institute of Physics.

U2 - 10.1063/1.1946907

DO - 10.1063/1.1946907

M3 - Article

SN - 0021-8979

VL - 98

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 2

M1 - 024303

ER -

Aerosol nanoparticles in the Fe <inf>1-x</inf>Cr <inf>x</inf> system: Room-temperature stabilization of the σ phase and σ→α -phase transformation

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