Spin reorientation and magnetoelastic coupling in Tb6Fe1-xCoxBi2 (x = 0, 0.125, 0.25, 0.375) alloy system

Koehler, Michael R.; Garlea, Vasile O.; McGuire, Michael A.; Jia, Lin; Keppens, Veerle

doi:10.1016/j.jallcom.2014.06.183

Title: Spin reorientation and magnetoelastic coupling in Tb₆Fe_1-xCo_xBi₂ (x = 0, 0.125, 0.25, 0.375) alloy system

Full Record
Other Related Research

Abstract

Tb₆FeBi₂ adopts a noncentrosymmetric crystal structure and orders ferromagnetically at T_C1 = 250 K with an additional magnetic transition at T_C2 = 60 K. The low temperature magnetoelastic response in this material is strong, and is enhanced by cobalt substitution. In this paper, the temperature dependence of the atomic and magnetic structure of Tb₆Fe_1-xCo_xBi₂ (x = 0, 0.125, 0.25, and 0.375) is reported from powder X-ray diffraction (XRD) and powder neutron diffraction (PND) measurements. Below the Néel temperature a ferrimagnetic ordering between the terbium and iron moments exists in all compounds studied. Related to the enhanced magnetostructural response, the Co-doped compounds undergo a crystallographic phase transition below about 60 K. This transition also involves a canting of the magnetic moments away from the c-axis. The structural transition is sluggish and not fully completed in the parent Tb₆FeBi₂ compound, where a mixture of monoclinic and hexagonal phases is identified below 60 K. Lastly, the spin reorientation transition is discussed in terms of competing exchange interactions and magnetocrystalline anisotropies of the two Tb sites and Fe/Co sublattices.

Authors:

Koehler, Michael R. ^[1]; Garlea, Vasile O. ^[2]; McGuire, Michael A. ^[2]; Jia, Lin ^[1]; Keppens, Veerle ^[1]

Univ. of Tennessee, Knoxville, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Sat Jul 05 00:00:00 EDT 2014

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1265275

Alternate Identifier(s):: OSTI ID: 1496339

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Alloys and Compounds

Additional Journal Information:: Journal Volume: 615; Journal ID: ISSN 0925-8388

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Rare earth alloys and compounds; Neutron diffraction; Crystal structure

Citation Formats


                    Koehler, Michael R., Garlea, Vasile O., McGuire, Michael A., Jia, Lin, and Keppens, Veerle. Spin reorientation and magnetoelastic coupling in Tb6Fe1-xCoxBi2 (x = 0, 0.125, 0.25, 0.375) alloy system.  United States: N. p., 2014. 
Web.  doi:10.1016/j.jallcom.2014.06.183.

Copy to clipboard


                    Koehler, Michael R., Garlea, Vasile O., McGuire, Michael A., Jia, Lin, & Keppens, Veerle. Spin reorientation and magnetoelastic coupling in Tb6Fe1-xCoxBi2 (x = 0, 0.125, 0.25, 0.375) alloy system.  United States.  https://doi.org/10.1016/j.jallcom.2014.06.183

Copy to clipboard


                    Koehler, Michael R., Garlea, Vasile O., McGuire, Michael A., Jia, Lin, and Keppens, Veerle. Sat .  
"Spin reorientation and magnetoelastic coupling in Tb6Fe1-xCoxBi2 (x = 0, 0.125, 0.25, 0.375) alloy system".  United States.  https://doi.org/10.1016/j.jallcom.2014.06.183.  https://www.osti.gov/servlets/purl/1265275.

Copy to clipboard


                    
@article{osti_1265275,

  title        = {Spin reorientation and magnetoelastic coupling in Tb6Fe1-xCoxBi2 (x = 0, 0.125, 0.25, 0.375) alloy system},

  author       = {Koehler, Michael R. and Garlea, Vasile O. and McGuire, Michael A. and Jia, Lin and Keppens, Veerle},

  abstractNote = {Tb6FeBi2 adopts a noncentrosymmetric crystal structure and orders ferromagnetically at TC1 = 250 K with an additional magnetic transition at TC2 = 60 K. The low temperature magnetoelastic response in this material is strong, and is enhanced by cobalt substitution. In this paper, the temperature dependence of the atomic and magnetic structure of Tb6Fe1-xCoxBi2 (x = 0, 0.125, 0.25, and 0.375) is reported from powder X-ray diffraction (XRD) and powder neutron diffraction (PND) measurements. Below the Néel temperature a ferrimagnetic ordering between the terbium and iron moments exists in all compounds studied. Related to the enhanced magnetostructural response, the Co-doped compounds undergo a crystallographic phase transition below about 60 K. This transition also involves a canting of the magnetic moments away from the c-axis. The structural transition is sluggish and not fully completed in the parent Tb6FeBi2 compound, where a mixture of monoclinic and hexagonal phases is identified below 60 K. Lastly, the spin reorientation transition is discussed in terms of competing exchange interactions and magnetocrystalline anisotropies of the two Tb sites and Fe/Co sublattices.},

  doi          = {10.1016/j.jallcom.2014.06.183},

  journal      = {Journal of Alloys and Compounds},

  number       = ,

  volume       = 615,

  place        = {United States},

  year         = {Sat Jul 05 00:00:00 EDT 2014},

  month        = {Sat Jul 05 00:00:00 EDT 2014}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1016/j.jallcom.2014.06.183

Other availability

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Structural and magnetic properties of Tb6Fe1-xCoxBi2 (0 x 0.375) compounds

Journal Article Jia, Lin ; Koehler, Michael R. ; McCarthy, David ; ... - Journal of Applied Physics

Tb{sub 6}Fe{sub 1-x}Co{sub x}Bi{sub 2} (x = 0, 0.125, 0.250, 0.375) compounds have been synthesized, and the structural and magnetic properties are reported. All of the compounds crystallize in the hexagonal Zr{sub 6}CoAs{sub 2}-type structure at room temperature, but low temperature x-ray diffraction measurements on the Co-doped samples Tb{sub 6}Fe{sub 0.750}Co{sub 0.250}Bi{sub 2} and Tb{sub 6}Fe{sub 0.625}Co{sub 0.375}Bi{sub 2} show a splitting of the Bragg peaks, indicating a symmetry lowering structural phase transition at {approx}40 K. Two magnetic transitions are observed, with T{sub C1} - 250 K and T{sub C2} - 70 K. While the high temperature transition corresponds tomore »« less
https://doi.org/10.1063/1.3565515
Elastic and magnetostrictive properties of Tb{sub 6}Fe{sub 1-x}Co{sub x}Bi{sub 2} (0 {<=} x {<=} 0.375)

Journal Article Koehler, Michael R ; Lin, Jia ; McCarthy, David ; ... - Journal of Applied Physics

Elastic moduli and magnetostriction data are reported for polycrystalline Tb{sub 6}Fe{sub 1-x}Co{sub x}Bi{sub 2} (0 {<=} x {<=} 0.375). The elastic moduli c{sub 11} and c{sub 44} have been measured as a function of temperature (5-300 K) and magnetic field (0-5 T), and reflect the ferromagnetic transition observed in these materials around 250 K. A remarkable elastic softening, which is partially suppressed upon application of a magnetic field, is observed at low temperatures and is believed to be linked to a structural transition that takes place in the Co-doped samples. The soft elastic moduli lead to large magnetostriction below 50more »« less
https://doi.org/10.1063/1.3549613
Synthesis and characterization of Sr{sub 0.75}Y{sub 0.25}Co{sub 1-x}M{sub x}O{sub 2.625+{delta}} (M=Ga, 0.125=<x=<0.500 and M=Fe, 0.125=<x=<0.875)

Journal Article Lindberg, F ; Drozhzhin, O A ; Istomin, S Ya ; ... - Journal of Solid State Chemistry

The effect of replacing Co{sup 3+} by Ga{sup 3+} and Fe{sup 3+} in the perovskite-related tetragonal phase Sr{sub 0.75}Y{sub 0.25}CoO{sub 2.625} with unit cell parameters: a=2a{sub p}, and c=4a{sub p} (314 phase) has been investigated. The 314 phase is formed by Sr{sub 0.75}Y{sub 0.25}Co{sub 1-x}M{sub x}O{sub 2.625+{delta}}, with x=<0.375 for M=Ga and x=<0.625 for M=Fe. High-resolution transmission electron microscopy and electron diffraction revealed frequent microtwinning in the iron-containing compounds, in contrast to the Ga-substituted 314 phases. Diffraction experiments and electron microscope images indicated that at higher Fe contents, 0.75=<x=<0.875, a disordered cubic perovskite structure forms. The crystal structures of Sr{submore »« less
https://doi.org/10.1016/j.jssc.2006.01.057
Elastic and magnetostrictive properties of Tb6Fe1-xCioBi2 (0 < x < 0.375)

Journal Article Koehler, Michael R. ; Jia, Lin ; McCarthy, David ; ... - Journal of Applied Physics

Elastic moduli and magnetostriction data are reported for polycrystalline Tb{sub 6}Fe{sub 1-x}Co{sub x}Bi{sub 2} (0 {le} x {le} 0.375). The elastic moduli c{sub 11} and c{sub 44} have been measured as a function of temperature (5-300 K) and magnetic field (0-5 T), and reflect the ferromagnetic transition observed in these materials around 250 K. A remarkable elastic softening, which is partially suppressed upon application of a magnetic field, is observed at low temperatures and is believed to be linked to a structural transition that takes place in the Co-doped samples. The soft elastic moduli lead to large magnetostriction below 50more »« less
https://doi.org/10.1063/1.3549613
Magnetic properties of Fe{sub 2}P-type R{sub 6}CoTe{sub 2} compounds (R=Gd-Er)

Journal Article Morozkin, A.V., E-mail: morozkin@general.chem.msu.r ; Mozharivskyj, Yu ; Svitlyk, V ; ... - Journal of Solid State Chemistry

The magnetic structure of the Fe{sub 2}P-type R{sub 6}CoTe{sub 2} phases (R=Gd-Er, space group P6-bar 2m) has been investigated through magnetization measurement and neutron powder diffraction. All phases demonstrate high-temperature ferromagnetic and low-temperature transitions: T{sub C}=220 K and T{sub CN}=180 K for Gd{sub 6}CoTe{sub 2}, T{sub C}=174 K and T{sub CN}=52 K for Tb{sub 6}CoTe{sub 2}, T{sub C}=125 K and T{sub CN}=26 K for Dy{sub 6}CoTe{sub 2}, T{sub CN}=60 K and T{sub N}=22 K for Ho{sub 6}CoTe{sub 2} and T{sub CN{approx}}30 K and T{sub N{approx}}14 K for Er{sub 6}CoTe{sub 2}. Between 174 and 52 K Tb{sub 6}CoTe{sub 2} has amore »« less
https://doi.org/10.1016/j.jssc.2010.04.002

Similar Records

Title: Spin reorientation and magnetoelastic coupling in Tb6Fe1-xCoxBi2 (x = 0, 0.125, 0.25, 0.375) alloy system

Abstract

Citation Formats

Title: Spin reorientation and magnetoelastic coupling in Tb₆Fe_1-xCo_xBi₂ (x = 0, 0.125, 0.25, 0.375) alloy system