Effects of Al and Fe solubility on the magnetofunctional properties of $\mathrm{AlFe_2B_2}$

Lejeune, B. T.; Schlagel, D. L.; Jensen, B. A.; Lograsso, T. A.; Kramer, M. J.; Lewis, L. H.

doi:10.1103/PhysRevMaterials.3.094411

Title: Effects of Al and Fe solubility on the magnetofunctional properties of $$\mathrm{AlFe_2B_2}$$

Abstract

Bridgman single-crystal growth of $$\mathrm{AlFe_2B_2}$$ resulted in systematic Fe-Al lattice site substitution in the $$\mathrm{AlFe_2B_2 (Mn_2AlB_2}$$ -type structure, aka $$\mathrm{1 - 2 - 2}$$) phase along the direction of solidification. The Fe:Al ratio varied from 1.94 to 2.06. The $$\mathrm{1 - 2 - 2}$$ phase lattice parameters, magnetic transition temperatures ($$T_t$$) $$\mathrm{280 - 315}$$ K, magnetic entropy changes ($Δ S$) $$\mathrm{2.3 - 4.0 J / kg K}$$, heat capacity ($$C_p$$) $$\mathrm{117 - 147 J / mol K}$$, and thermal conductivity ($κ$) $$\mathrm{~ 2.4 - 11.5 W / m K}$$ all varied monotonically across the region of solubility. These findings confirm the sensitivity of the magnetic and thermal properties of the $$\mathrm{AlFe_2B_2}$$ compound to antisite defects. The interplay between Al and Fe lattice site occupancy and the resultant magnetic and electronic responses facilitates tailoring the properties of the $$\mathrm{AlFe_2B_2}$$ system for potential functional applications, including magnetic cooling.

Authors:

^[1]; Schlagel, D. L. ^[2]; Jensen, B. A. ^[2]; Lograsso, T. A. ^[2]; Kramer, M. J. ^[2]; Lewis, L. H. ^[3]

Northeastern Univ., Boston, MA (United States). Dept. of Chemical Engineering
Ames Lab., Ames, IA (United States). Division of Materials Science and Engineering
Northeastern Univ., Boston, MA (United States). Dept. of Chemical Engineering and Dept. of Mechanical and Industrial Engineering

Publication Date:: 2019-09-30

Research Org.:: Ames Lab., Ames, IA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1571457

Report Number(s):: IS-J-10059
Journal ID: ISSN 2475-9953; PRMHAR; TRN: US2100207

Grant/Contract Number:: AR00000754; SC0014664; AC02-07CH11358

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Materials

Additional Journal Information:: Journal Volume: 3; Journal Issue: 9; Journal ID: ISSN 2475-9953

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Lejeune, B. T., Schlagel, D. L., Jensen, B. A., Lograsso, T. A., Kramer, M. J., and Lewis, L. H. Effects of Al and Fe solubility on the magnetofunctional properties of $\mathrm{AlFe_2B_2}$.  United States: N. p., 2019. 
Web.  doi:10.1103/PhysRevMaterials.3.094411.

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                    Lejeune, B. T., Schlagel, D. L., Jensen, B. A., Lograsso, T. A., Kramer, M. J., & Lewis, L. H. Effects of Al and Fe solubility on the magnetofunctional properties of $\mathrm{AlFe_2B_2}$.  United States.  https://doi.org/10.1103/PhysRevMaterials.3.094411

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                    Lejeune, B. T., Schlagel, D. L., Jensen, B. A., Lograsso, T. A., Kramer, M. J., and Lewis, L. H. Mon .  
"Effects of Al and Fe solubility on the magnetofunctional properties of $\mathrm{AlFe_2B_2}$".  United States.  https://doi.org/10.1103/PhysRevMaterials.3.094411.  https://www.osti.gov/servlets/purl/1571457.

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@article{osti_1571457,

  title        = {Effects of Al and Fe solubility on the magnetofunctional properties of $\mathrm{AlFe_2B_2}$},

  author       = {Lejeune, B. T. and Schlagel, D. L. and Jensen, B. A. and Lograsso, T. A. and Kramer, M. J. and Lewis, L. H.},

  abstractNote = {Bridgman single-crystal growth of $\mathrm{AlFe_2B_2}$ resulted in systematic Fe-Al lattice site substitution in the $\mathrm{AlFe_2B_2 (Mn_2AlB_2}$ -type structure, aka $\mathrm{1 - 2 - 2}$) phase along the direction of solidification. The Fe:Al ratio varied from 1.94 to 2.06. The $\mathrm{1 - 2 - 2}$ phase lattice parameters, magnetic transition temperatures ($T_t$) $\mathrm{280 - 315}$ K, magnetic entropy changes ($Δ S$) $\mathrm{2.3 - 4.0 J / kg K}$, heat capacity ($C_p$) $\mathrm{117 - 147 J / mol K}$, and thermal conductivity ($κ$) $\mathrm{~ 2.4 - 11.5 W / m K}$ all varied monotonically across the region of solubility. These findings confirm the sensitivity of the magnetic and thermal properties of the $\mathrm{AlFe_2B_2}$ compound to antisite defects. The interplay between Al and Fe lattice site occupancy and the resultant magnetic and electronic responses facilitates tailoring the properties of the $\mathrm{AlFe_2B_2}$ system for potential functional applications, including magnetic cooling.},

  doi          = {10.1103/PhysRevMaterials.3.094411},

  journal      = {Physical Review Materials},

  number       = 9,

  volume       = 3,

  place        = {United States},

  year         = {2019},

  month        = {9}

}

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Title: Effects of Al and Fe solubility on the magnetofunctional properties of $$\mathrm{AlFe_2B_2}$$

Abstract

Citation Formats

Magnetocaloric Effect in AlFe 2 B 2 : Toward Magnetic Refrigerants from Earth-Abundant Elements journal, June 2013

Measurement of heat capacity by fitting the whole temperature response of a heat-pulse calorimeter journal, January 1997

Electronic structure and magnetic properties in T 2 AlB 2 ( T =Fe, Mn, Cr, Co, and Ni) and their alloys journal, March 2017

Magnetic frustration and magnetocaloric effect in AlFe 2− x Mn x B 2 ( x = 0–0.5) ribbons journal, July 2015

Magnetic properties of AlFe 2 B 2 and CeMn 2 Si 2 synthesized by melt spinning of stoichiometric compositions journal, April 2015

AlM 2 B 2 (M = Cr, Mn, Fe, Co, Ni): a group of nanolaminated materials journal, March 2017

On the ferromagnetism of AlFe2B2 journal, August 2011

The Magnetocaloric Effect and Magnetic Refrigeration Near Room Temperature: Materials and Models journal, August 2012

Anisotropic thermal conductivity of magnetocaloric AlFe2B2 journal, September 2018

Rapid synthesis and characterization of a nanolaminated Fe2AlB2 compound journal, October 2018

Phase analysis of AlFe 2 B 2 by synchrotron X-ray diffraction, magnetic and Mössbauer studies journal, April 2017

Enhanced room-temperature magnetocaloric effect and tunable magnetic response in Ga-and Ge-substituted AlFe2B2 journal, March 2019

Effects of Al content and annealing on the phases formation, lattice parameters, and magnetization of A l x F e 2 B 2 ( x = 1.0 , 1.1 , 1.2 ) alloys journal, March 2018

Lattice-driven magnetic transitions in Al(Fe,T)2X2 compounds journal, July 2019

Anisotropic magnetocaloric response in AlFe2B2 journal, May 2018

Magnetocaloric effect: From materials research to refrigeration devices journal, April 2018

GSAS-II : the genesis of a modern open-source all purpose crystallography software package journal, March 2013

Investigation of magnetic properties and electronic structure of layered-structure borides Al T 2 B 2 ( T =Fe, Mn, Cr) and AlFe 2–x Mn x B 2 journal, April 2015

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Developing magnetofunctionality: Coupled structural and magnetic phase transition in AlFe2B2 journal, November 2015

AlFe 2– x Co x B 2 ( x = 0–0.30): T C Tuning through Co Substitution for a Promising Magnetocaloric Material Realized by Spark Plasma Sintering journal, September 2016

Magnetic properties of single crystalline itinerant ferromagnet AlFe 2 B 2 journal, August 2018

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Magnetocaloric Effect in AlFe ₂ B ₂ : Toward Magnetic Refrigerants from Earth-Abundant Elements
journal, June 2013

Measurement of heat capacity by fitting the whole temperature response of a heat-pulse calorimeter
journal, January 1997

Electronic structure and magnetic properties in $T_{2} {AlB}_{2}$ ( $T$ =Fe, Mn, Cr, Co, and Ni) and their alloys
journal, March 2017

Magnetic frustration and magnetocaloric effect in AlFe _{2− x} Mn _x B ₂ ( x = 0–0.5) ribbons
journal, July 2015

Magnetic properties of AlFe ₂ B ₂ and CeMn ₂ Si ₂ synthesized by melt spinning of stoichiometric compositions
journal, April 2015

AlM ₂ B ₂ (M = Cr, Mn, Fe, Co, Ni): a group of nanolaminated materials
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On the ferromagnetism of AlFe2B2
journal, August 2011

The Magnetocaloric Effect and Magnetic Refrigeration Near Room Temperature: Materials and Models
journal, August 2012

Anisotropic thermal conductivity of magnetocaloric AlFe2B2
journal, September 2018

Rapid synthesis and characterization of a nanolaminated Fe2AlB2 compound
journal, October 2018

Phase analysis of AlFe 2 B 2 by synchrotron X-ray diffraction, magnetic and Mössbauer studies
journal, April 2017

Enhanced room-temperature magnetocaloric effect and tunable magnetic response in Ga-and Ge-substituted AlFe2B2
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