Fe                         50                         Ni                         50                          synthesized by high energy ball milling: A systematic study using X-ray diffraction, EXAFS and Mössbauer methods

V. A.Peña Rodríguez; C. Rojas-Ayala; J. Medina Medina; P. Paucar Cabrera; J. Quispe-Marcatoma; C. V. Landauro; J. Rojas Tapia; E. M. Baggio-Saitovitch; E. C. Passamani

doi:10.1016/j.matchar.2019.01.036

Fe ₅₀ Ni ₅₀ synthesized by high energy ball milling: A systematic study using X-ray diffraction, EXAFS and Mössbauer methods

V. A.Peña Rodríguez, C. Rojas-Ayala, J. Medina Medina, P. Paucar Cabrera, J. Quispe-Marcatoma, C. V. Landauro, J. Rojas Tapia, E. M. Baggio-Saitovitch, E. C. Passamani

Research output: Contribution to journal › Review article › peer-review

13 Scopus citations

Abstract

Fe ₅₀ Ni ₅₀ alloy powder was prepared by milling the 1:1 stoichiometric mixture of Fe and Ni high purity elements using high energy vibrational ball-mill. Final powdered material was obtained directly after 30 h of milling process and the Rietveld analysis of the X-ray diffraction pattern of the sample reveals the presence of two Fe–Ni phases: the disordered γ–(Fe ₄₅ Ni ₅₅ ) alloy, with 91% of total fraction of the material (Fe–Ni solid solution plus grain boundary regions) and the chemically-ordered FeNi phase (9%), with L1 ₀ tetragonal structure. Average grain sizes of these Fe–Ni phases are respectively 60 nm and 20 nm. Results of extended X-ray absorption fine structure of Ni and Fe as well as ⁵⁷ Fe Mössbauer spectroscopy also suggest the presence of atomically ordered FeNi phase. Mössbauer data have also shown that both Fe–Ni phases are magnetically ordered at room temperature. Our results indicate that high energy milling method can simulate extreme conditions of sample preparation required for the formation of the T-FeNi phase.

Original language	English
Pages (from-to)	249-254
Number of pages	6
Journal	Materials Characterization
Volume	149
DOIs	https://doi.org/10.1016/j.matchar.2019.01.036
State	Published - Mar 2019

Bibliographical note

Funding Information:
This work has been supported by the Brazilian Synchrotron Light Laboratory (LNLS) under proposal XAFS1 – 1304. The authors would also like to acknowledge the financial support provided by CSI-UNMSM under project N.o 0801301011, contract 011-2014-FONDECYT, FAPERJ-Brazil (PV Emeritus), FINEP, FAPES and Latin American Center of Physics.

Funding Information:
This work has been supported by the Brazilian Synchrotron Light Laboratory (LNLS) under proposal XAFS1 – 1304 . The authors would also like to acknowledge the financial support provided by CSI - UNMSM under project N. o 0801301011 , contract 011-2014-FONDECYT, FAPERJ-Brazil (PV Emeritus), FINEP, FAPES and Latin American Center of Physics.

Publisher Copyright:
© 2019

Keywords

Extended X-ray absorption fine structure
Mechanical alloying
Mössbauer spectroscopy
Nanostructured materials
X-ray diffraction

Access to Document

10.1016/j.matchar.2019.01.036

Cite this

Rodríguez, V. A. P., Rojas-Ayala, C., Medina, J. M., Cabrera, P. P., Quispe-Marcatoma, J., Landauro, C. V., Tapia, J. R., Baggio-Saitovitch, E. M., & Passamani, E. C. (2019). Fe ₅₀ Ni ₅₀ synthesized by high energy ball milling: A systematic study using X-ray diffraction, EXAFS and Mössbauer methods. Materials Characterization, 149, 249-254. https://doi.org/10.1016/j.matchar.2019.01.036

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title = "Fe 50 Ni 50 synthesized by high energy ball milling: A systematic study using X-ray diffraction, EXAFS and M{\"o}ssbauer methods",

abstract = " Fe 50 Ni 50 alloy powder was prepared by milling the 1:1 stoichiometric mixture of Fe and Ni high purity elements using high energy vibrational ball-mill. Final powdered material was obtained directly after 30 h of milling process and the Rietveld analysis of the X-ray diffraction pattern of the sample reveals the presence of two Fe–Ni phases: the disordered γ–(Fe 45 Ni 55 ) alloy, with 91% of total fraction of the material (Fe–Ni solid solution plus grain boundary regions) and the chemically-ordered FeNi phase (9%), with L1 0 tetragonal structure. Average grain sizes of these Fe–Ni phases are respectively 60 nm and 20 nm. Results of extended X-ray absorption fine structure of Ni and Fe as well as 57 Fe M{\"o}ssbauer spectroscopy also suggest the presence of atomically ordered FeNi phase. M{\"o}ssbauer data have also shown that both Fe–Ni phases are magnetically ordered at room temperature. Our results indicate that high energy milling method can simulate extreme conditions of sample preparation required for the formation of the T-FeNi phase. ",

keywords = "Extended X-ray absorption fine structure, Mechanical alloying, M{\"o}ssbauer spectroscopy, Nanostructured materials, X-ray diffraction",

author = "Rodr{\'i}guez, {V. A.Pe{\~n}a} and C. Rojas-Ayala and Medina, {J. Medina} and Cabrera, {P. Paucar} and J. Quispe-Marcatoma and Landauro, {C. V.} and Tapia, {J. Rojas} and Baggio-Saitovitch, {E. M.} and Passamani, {E. C.}",

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month = mar,

doi = "10.1016/j.matchar.2019.01.036",

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Rodríguez, VAP , Rojas-Ayala, C, Medina, JM, Cabrera, PP, Quispe-Marcatoma, J , Landauro, CV, Tapia, JR, Baggio-Saitovitch, EM & Passamani, EC 2019, 'Fe ₅₀ Ni ₅₀ synthesized by high energy ball milling: A systematic study using X-ray diffraction, EXAFS and Mössbauer methods', Materials Characterization, vol. 149, pp. 249-254. https://doi.org/10.1016/j.matchar.2019.01.036

Fe ₅₀ Ni ₅₀ synthesized by high energy ball milling: A systematic study using X-ray diffraction, EXAFS and Mössbauer methods. / Rodríguez, V. A.Peña ; Rojas-Ayala, C.; Medina, J. Medina et al.
In: Materials Characterization, Vol. 149, 03.2019, p. 249-254.

Research output: Contribution to journal › Review article › peer-review

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T1 - Fe 50 Ni 50 synthesized by high energy ball milling

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AU - Rodríguez, V. A.Peña

AU - Rojas-Ayala, C.

AU - Medina, J. Medina

AU - Cabrera, P. Paucar

AU - Quispe-Marcatoma, J.

AU - Landauro, C. V.

AU - Tapia, J. Rojas

AU - Baggio-Saitovitch, E. M.

AU - Passamani, E. C.

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N2 - Fe 50 Ni 50 alloy powder was prepared by milling the 1:1 stoichiometric mixture of Fe and Ni high purity elements using high energy vibrational ball-mill. Final powdered material was obtained directly after 30 h of milling process and the Rietveld analysis of the X-ray diffraction pattern of the sample reveals the presence of two Fe–Ni phases: the disordered γ–(Fe 45 Ni 55 ) alloy, with 91% of total fraction of the material (Fe–Ni solid solution plus grain boundary regions) and the chemically-ordered FeNi phase (9%), with L1 0 tetragonal structure. Average grain sizes of these Fe–Ni phases are respectively 60 nm and 20 nm. Results of extended X-ray absorption fine structure of Ni and Fe as well as 57 Fe Mössbauer spectroscopy also suggest the presence of atomically ordered FeNi phase. Mössbauer data have also shown that both Fe–Ni phases are magnetically ordered at room temperature. Our results indicate that high energy milling method can simulate extreme conditions of sample preparation required for the formation of the T-FeNi phase.

AB - Fe 50 Ni 50 alloy powder was prepared by milling the 1:1 stoichiometric mixture of Fe and Ni high purity elements using high energy vibrational ball-mill. Final powdered material was obtained directly after 30 h of milling process and the Rietveld analysis of the X-ray diffraction pattern of the sample reveals the presence of two Fe–Ni phases: the disordered γ–(Fe 45 Ni 55 ) alloy, with 91% of total fraction of the material (Fe–Ni solid solution plus grain boundary regions) and the chemically-ordered FeNi phase (9%), with L1 0 tetragonal structure. Average grain sizes of these Fe–Ni phases are respectively 60 nm and 20 nm. Results of extended X-ray absorption fine structure of Ni and Fe as well as 57 Fe Mössbauer spectroscopy also suggest the presence of atomically ordered FeNi phase. Mössbauer data have also shown that both Fe–Ni phases are magnetically ordered at room temperature. Our results indicate that high energy milling method can simulate extreme conditions of sample preparation required for the formation of the T-FeNi phase.

KW - Extended X-ray absorption fine structure

KW - Mechanical alloying

KW - Mössbauer spectroscopy

KW - Nanostructured materials

KW - X-ray diffraction

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DO - 10.1016/j.matchar.2019.01.036

M3 - Artículo de revisión

AN - SCOPUS:85061193201

SN - 1044-5803

VL - 149

SP - 249

EP - 254

JO - Materials Characterization

JF - Materials Characterization

ER -

Rodríguez VAP , Rojas-Ayala C, Medina JM, Cabrera PP, Quispe-Marcatoma J , Landauro CV et al. Fe ₅₀ Ni ₅₀ synthesized by high energy ball milling: A systematic study using X-ray diffraction, EXAFS and Mössbauer methods. Materials Characterization. 2019 Mar;149:249-254. doi: 10.1016/j.matchar.2019.01.036