Effect of Ga substitution on structural and magnetic properties of Fe50Mn25Al25-xGax Heusler alloys

S. S. Mishra; T. P. Yadav; Ram Manohar Yadav; Anand B. Puthirath; Liangzi Deng; Moein Adnani; Ching Wu Chu; Robert Vajtai; P. M. Ajayan; Krishanu Biswas; N. K. Mukhopadhyay; O. N. Srivastava

doi:10.1016/j.jallcom.2020.156756

Effect of Ga substitution on structural and magnetic properties of Fe₅₀Mn₂₅Al_25-xGa_x Heusler alloys

S. S. Mishra, T. P. Yadav, Ram Manohar Yadav, Anand B. Puthirath, Liangzi Deng, Moein Adnani, Ching Wu Chu, Robert Vajtai, P. M. Ajayan, Krishanu Biswas, N. K. Mukhopadhyay, O. N. Srivastava

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Abstract

Heusler alloys possess the structure of an ordered compound while displaying most of the properties of metals. Numerous magnetic exchange mechanisms may be operating in such systems. Herein, the structural and magnetic properties have been investigated as a function of substitution of Al by Ga in Fe₅₀Mn₂₅Al_25-xGa_x (x = 0, 2.5, 5.0, 7.5, 10.0) quaternary (pseudo-ternary) full Heusler alloys. The X-ray diffraction analysis confirms the substituting Al by Ga promoting the lattice expansion in the L2₁ crystal structure in Fe₅₀Mn₂₅Al_25-xGa_x alloys. The line scanning profile using energy dispersive X-ray analysis investigations suggests the homogeneous distribution of Ga in all the alloys. The magnetic moment of the alloys was found to be affected by Ga as the antiferromagnetic counterpart increases with Ga. A decrease in the value of Curie temperature was found with increase in Ga content. A second-order magnetic phase transition was observed in the alloys above room temperature.

Original language	English
Article number	156756
Journal	Journal of Alloys and Compounds
Volume	854
DOIs	https://doi.org/10.1016/j.jallcom.2020.156756
Publication status	Published - 2021 Feb 15

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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Mishra, S. S., Yadav, T. P., Yadav, R. M., Puthirath, A. B., Deng, L., Adnani, M., Chu, C. W., Vajtai, R., Ajayan, P. M., Biswas, K., Mukhopadhyay, N. K., & Srivastava, O. N. (2021). Effect of Ga substitution on structural and magnetic properties of Fe₅₀Mn₂₅Al_25-xGa_x Heusler alloys. Journal of Alloys and Compounds, 854, Article 156756. https://doi.org/10.1016/j.jallcom.2020.156756

@article{398eb3fe7dc14468aa717777d462dd4f,

title = "Effect of Ga substitution on structural and magnetic properties of Fe50Mn25Al25-xGax Heusler alloys",

abstract = "Heusler alloys possess the structure of an ordered compound while displaying most of the properties of metals. Numerous magnetic exchange mechanisms may be operating in such systems. Herein, the structural and magnetic properties have been investigated as a function of substitution of Al by Ga in Fe50Mn25Al25-xGax (x = 0, 2.5, 5.0, 7.5, 10.0) quaternary (pseudo-ternary) full Heusler alloys. The X-ray diffraction analysis confirms the substituting Al by Ga promoting the lattice expansion in the L21 crystal structure in Fe50Mn25Al25-xGax alloys. The line scanning profile using energy dispersive X-ray analysis investigations suggests the homogeneous distribution of Ga in all the alloys. The magnetic moment of the alloys was found to be affected by Ga as the antiferromagnetic counterpart increases with Ga. A decrease in the value of Curie temperature was found with increase in Ga content. A second-order magnetic phase transition was observed in the alloys above room temperature.",

author = "Mishra, {S. S.} and Yadav, {T. P.} and Yadav, {Ram Manohar} and Puthirath, {Anand B.} and Liangzi Deng and Moein Adnani and Chu, {Ching Wu} and Robert Vajtai and Ajayan, {P. M.} and Krishanu Biswas and Mukhopadhyay, {N. K.} and Srivastava, {O. N.}",

note = "Funding Information: S. S. Mishra thanks the University Grants Commission (UGC) , India, for BSR fellowship, during which period the work was completed. RMY acknowledges the USIEF and Fulbright Foreign Scholarship Board (FFSB) USA for Fulbright Nehru Academic and Professional Excellence Fellowship. The work performed at the Texas Center for Superconductivity at the University of Houston is supported by the U.S. Air Force Office of Scientific Research Grant FA9550-15-1-0236 , the T. L. L. Temple Foundation, the John J. and Rebecca Moores Endowment, and the State of Texas through the Texas Center for Superconductivity at the University of Houston . A.B.P. Acknowledges IUSSTF and SERB India for the financial support in the form of postdoctoral fellowship. Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2021",

month = feb,

day = "15",

doi = "10.1016/j.jallcom.2020.156756",

language = "English",

volume = "854",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Effect of Ga substitution on structural and magnetic properties of Fe50Mn25Al25-xGax Heusler alloys

AU - Mishra, S. S.

AU - Yadav, T. P.

AU - Yadav, Ram Manohar

AU - Puthirath, Anand B.

AU - Deng, Liangzi

AU - Adnani, Moein

AU - Chu, Ching Wu

AU - Vajtai, Robert

AU - Ajayan, P. M.

AU - Biswas, Krishanu

AU - Mukhopadhyay, N. K.

AU - Srivastava, O. N.

N1 - Funding Information: S. S. Mishra thanks the University Grants Commission (UGC) , India, for BSR fellowship, during which period the work was completed. RMY acknowledges the USIEF and Fulbright Foreign Scholarship Board (FFSB) USA for Fulbright Nehru Academic and Professional Excellence Fellowship. The work performed at the Texas Center for Superconductivity at the University of Houston is supported by the U.S. Air Force Office of Scientific Research Grant FA9550-15-1-0236 , the T. L. L. Temple Foundation, the John J. and Rebecca Moores Endowment, and the State of Texas through the Texas Center for Superconductivity at the University of Houston . A.B.P. Acknowledges IUSSTF and SERB India for the financial support in the form of postdoctoral fellowship. Publisher Copyright: © 2020 Elsevier B.V.

PY - 2021/2/15

Y1 - 2021/2/15

N2 - Heusler alloys possess the structure of an ordered compound while displaying most of the properties of metals. Numerous magnetic exchange mechanisms may be operating in such systems. Herein, the structural and magnetic properties have been investigated as a function of substitution of Al by Ga in Fe50Mn25Al25-xGax (x = 0, 2.5, 5.0, 7.5, 10.0) quaternary (pseudo-ternary) full Heusler alloys. The X-ray diffraction analysis confirms the substituting Al by Ga promoting the lattice expansion in the L21 crystal structure in Fe50Mn25Al25-xGax alloys. The line scanning profile using energy dispersive X-ray analysis investigations suggests the homogeneous distribution of Ga in all the alloys. The magnetic moment of the alloys was found to be affected by Ga as the antiferromagnetic counterpart increases with Ga. A decrease in the value of Curie temperature was found with increase in Ga content. A second-order magnetic phase transition was observed in the alloys above room temperature.

AB - Heusler alloys possess the structure of an ordered compound while displaying most of the properties of metals. Numerous magnetic exchange mechanisms may be operating in such systems. Herein, the structural and magnetic properties have been investigated as a function of substitution of Al by Ga in Fe50Mn25Al25-xGax (x = 0, 2.5, 5.0, 7.5, 10.0) quaternary (pseudo-ternary) full Heusler alloys. The X-ray diffraction analysis confirms the substituting Al by Ga promoting the lattice expansion in the L21 crystal structure in Fe50Mn25Al25-xGax alloys. The line scanning profile using energy dispersive X-ray analysis investigations suggests the homogeneous distribution of Ga in all the alloys. The magnetic moment of the alloys was found to be affected by Ga as the antiferromagnetic counterpart increases with Ga. A decrease in the value of Curie temperature was found with increase in Ga content. A second-order magnetic phase transition was observed in the alloys above room temperature.

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U2 - 10.1016/j.jallcom.2020.156756

DO - 10.1016/j.jallcom.2020.156756

M3 - Article

AN - SCOPUS:85092917764

SN - 0925-8388

VL - 854

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

M1 - 156756

ER -

Effect of Ga substitution on structural and magnetic properties of Fe₅₀Mn₂₅Al_25-xGa_x Heusler alloys

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