On the nature of the disordered microstructure in Sm(Co,Cu)5 alloys with increasing Cu content

A. Pentón; E. Estévez; R. Lora; J. H. Espina-Hernández; R. Grossinger; R. S. Turtelli; A. Valor-Reed

doi:10.1016/j.jallcom.2006.04.044

On the nature of the disordered microstructure in Sm(Co,Cu)₅ alloys with increasing Cu content

A. Pentón, E. Estévez, R. Lora, J. H. Espina-Hernández, R. Grossinger, R. S. Turtelli, A. Valor-Reed

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

7 Scopus citations

Abstract

X-ray diffraction and transmission electron microscopy (TEM) experiments were performed in heat-treated Sm(Co,Cu)₅ samples with different Co/Cu content. The major phase observed in the diffraction patterns exhibits a hexagonal CaCu₅ type structure in all the studied compositions. The behavior of the diffraction profiles, as function of the Cu content, is believed to be due to an inhomogeneous distribution of Co and Cu through out the samples. Heavily planar faulted regions have been observed by means of TEM and are also associated with Sm and Co rich phases within the matrix. A CaCu₅ type structure with local Sm rich regions seems to be responsible for the observed magnetic behavior.

Original language	English
Pages (from-to)	343-347
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	429
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2006.04.044
State	Published - 21 Feb 2007
Externally published	Yes

Keywords

Electron microscopy
Sm-Co alloys
Structural disorder
X-ray diffraction

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10.1016/j.jallcom.2006.04.044

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title = "On the nature of the disordered microstructure in Sm(Co,Cu)5 alloys with increasing Cu content",

abstract = "X-ray diffraction and transmission electron microscopy (TEM) experiments were performed in heat-treated Sm(Co,Cu)5 samples with different Co/Cu content. The major phase observed in the diffraction patterns exhibits a hexagonal CaCu5 type structure in all the studied compositions. The behavior of the diffraction profiles, as function of the Cu content, is believed to be due to an inhomogeneous distribution of Co and Cu through out the samples. Heavily planar faulted regions have been observed by means of TEM and are also associated with Sm and Co rich phases within the matrix. A CaCu5 type structure with local Sm rich regions seems to be responsible for the observed magnetic behavior.",

keywords = "Electron microscopy, Sm-Co alloys, Structural disorder, X-ray diffraction",

author = "A. Pent{\'o}n and E. Est{\'e}vez and R. Lora and Espina-Hern{\'a}ndez, {J. H.} and R. Grossinger and Turtelli, {R. S.} and A. Valor-Reed",

note = "Funding Information: LNLS at Campinas is gratefully acknowledged for financial assistance and for providing an outstanding scientific environment (Project XRD 884/01). This work was also partially supported by the EC under ALFA II Network: HIFIELD; Project number II0147FI.",

year = "2007",

month = feb,

day = "21",

doi = "10.1016/j.jallcom.2006.04.044",

language = "Ingl{\'e}s",

volume = "429",

pages = "343--347",

journal = "Journal of Alloys and Compounds",

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T1 - On the nature of the disordered microstructure in Sm(Co,Cu)5 alloys with increasing Cu content

AU - Pentón, A.

AU - Estévez, E.

AU - Lora, R.

AU - Espina-Hernández, J. H.

AU - Grossinger, R.

AU - Turtelli, R. S.

AU - Valor-Reed, A.

N1 - Funding Information: LNLS at Campinas is gratefully acknowledged for financial assistance and for providing an outstanding scientific environment (Project XRD 884/01). This work was also partially supported by the EC under ALFA II Network: HIFIELD; Project number II0147FI.

PY - 2007/2/21

Y1 - 2007/2/21

N2 - X-ray diffraction and transmission electron microscopy (TEM) experiments were performed in heat-treated Sm(Co,Cu)5 samples with different Co/Cu content. The major phase observed in the diffraction patterns exhibits a hexagonal CaCu5 type structure in all the studied compositions. The behavior of the diffraction profiles, as function of the Cu content, is believed to be due to an inhomogeneous distribution of Co and Cu through out the samples. Heavily planar faulted regions have been observed by means of TEM and are also associated with Sm and Co rich phases within the matrix. A CaCu5 type structure with local Sm rich regions seems to be responsible for the observed magnetic behavior.

AB - X-ray diffraction and transmission electron microscopy (TEM) experiments were performed in heat-treated Sm(Co,Cu)5 samples with different Co/Cu content. The major phase observed in the diffraction patterns exhibits a hexagonal CaCu5 type structure in all the studied compositions. The behavior of the diffraction profiles, as function of the Cu content, is believed to be due to an inhomogeneous distribution of Co and Cu through out the samples. Heavily planar faulted regions have been observed by means of TEM and are also associated with Sm and Co rich phases within the matrix. A CaCu5 type structure with local Sm rich regions seems to be responsible for the observed magnetic behavior.

KW - Electron microscopy

KW - Sm-Co alloys

KW - Structural disorder

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=33846569947&partnerID=8YFLogxK

U2 - 10.1016/j.jallcom.2006.04.044

DO - 10.1016/j.jallcom.2006.04.044

M3 - Artículo

SN - 0925-8388

VL - 429

SP - 343

EP - 347

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

On the nature of the disordered microstructure in Sm(Co,Cu)₅ alloys with increasing Cu content

Abstract

Keywords

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