Anisotropy induced anomalies in Dy1$-$xTbxAl2

Khan, M.; Pathak, A. K.; Mudryk, Y.; Pecharsky, V. K.

doi:10.1039/C6TC05384J

Title: Anisotropy induced anomalies in Dy_1$$-$$xTb_xAl₂

Abstract

The Dy_1$$-$$xTb_xAl₂ alloys have been investigated by X-ray powder diffraction, heat capacity, and magnetic measurements. All samples exhibit cubic Laves phase crystal structure at room temperature but at T_C, DyAl2 and TbAl₂ show tetragonal and rhombohedral distortions, respectively. First order phase transitions are observed below T_C (at the spin-reorientation transition, T_SR) in the alloys with 0.15 ≤ x ≤ 0.35. These transitions are signified by sharp heat capacity peaks and corresponding anomalies in the magnetization and ac magnetic susceptibility data. The observations are interpreted by taking into consideration the differences in easy magnetization directions of DyAl₂ and TbAl₂. Due to the competing magnetic structures, the anisotropy-related instability and magnetic frustrations are prominent in the Dy_1$$-$$xTb_xAl₂ alloys at certain concentrations resulting in the first order transitions.

Authors:

Khan, M. ^[1]; Miami Univ., Oxford, OH ^[2]; Pathak, A. K. ^[1]; Mudryk, Y. ^[1]; Gschneidner, Jr., K. A. ^[3]; Pecharsky, V. K. ^[3]

Ames Lab. and Iowa State Univ., Ames, IA (United States)
(United States) . Dept. of Physics
Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Materials Science and Engineering

Publication Date:: Mon Jan 02 00:00:00 EST 2017

Research Org.:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1355404

Report Number(s):: IS-J-9258
Journal ID: ISSN 2050-7526; JMCCCX

Grant/Contract Number:: AC02-07CH11358

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Materials Chemistry. C

Additional Journal Information:: Journal Volume: 5; Journal Issue: 4; Journal ID: ISSN 2050-7526

Publisher:: Royal Society of Chemistry

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Khan, M., Miami Univ., Oxford, OH, Pathak, A. K., Mudryk, Y., Gschneidner, Jr., K. A., and Pecharsky, V. K. Anisotropy induced anomalies in Dy1$-$xTbxAl2.  United States: N. p., 2017. 
Web.  doi:10.1039/C6TC05384J.

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                    Khan, M., Miami Univ., Oxford, OH, Pathak, A. K., Mudryk, Y., Gschneidner, Jr., K. A., & Pecharsky, V. K. Anisotropy induced anomalies in Dy1$-$xTbxAl2.  United States.  https://doi.org/10.1039/C6TC05384J

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                    Khan, M., Miami Univ., Oxford, OH, Pathak, A. K., Mudryk, Y., Gschneidner, Jr., K. A., and Pecharsky, V. K. Mon .  
"Anisotropy induced anomalies in Dy1$-$xTbxAl2".  United States.  https://doi.org/10.1039/C6TC05384J.  https://www.osti.gov/servlets/purl/1355404.

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@article{osti_1355404,

  title        = {Anisotropy induced anomalies in Dy1$-$xTbxAl2},

  author       = {Khan, M. and Miami Univ., Oxford, OH and Pathak, A. K. and Mudryk, Y. and Gschneidner, Jr., K. A. and Pecharsky, V. K.},

  abstractNote = {The Dy1$-$xTbxAl2 alloys have been investigated by X-ray powder diffraction, heat capacity, and magnetic measurements. All samples exhibit cubic Laves phase crystal structure at room temperature but at TC, DyAl2 and TbAl2 show tetragonal and rhombohedral distortions, respectively. First order phase transitions are observed below TC (at the spin-reorientation transition, TSR) in the alloys with 0.15 ≤ x ≤ 0.35. These transitions are signified by sharp heat capacity peaks and corresponding anomalies in the magnetization and ac magnetic susceptibility data. The observations are interpreted by taking into consideration the differences in easy magnetization directions of DyAl2 and TbAl2. Due to the competing magnetic structures, the anisotropy-related instability and magnetic frustrations are prominent in the Dy1$-$xTbxAl2 alloys at certain concentrations resulting in the first order transitions.},

  doi          = {10.1039/C6TC05384J},

  journal      = {Journal of Materials Chemistry. C},

  number       = 4,

  volume       = 5,

  place        = {United States},

  year         = {Mon Jan 02 00:00:00 EST 2017},

  month        = {Mon Jan 02 00:00:00 EST 2017}

}

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Similar Records

Title: Anisotropy induced anomalies in Dy1$$-$$xTbxAl2

Abstract

Citation Formats

Magnetism of Ho 1 − x Tb x Al 2 alloys: Critical dependence of a first-order transition on Tb concentration journal, December 2011

Magnetic properties of single-crystalDyAl2 journal, July 2005

A 3–350 K fast automatic small sample calorimeter journal, November 1997

Spin reorientation transitions in Ho 1-x Dy x Al 2 alloys journal, November 2011

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Magnetic Properties of PrAl 2 and ErAl 2 journal, September 1968

Use of Stevens coefficients for the prediction of magnetic transitions in pseudobinary R 1 − x R x ' Al 2 alloys: Application to Tm 1 − x Tb x Al 2 journal, April 2011

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Disappearance and reappearance of magnetic ordering upon lanthanide substitution in ( Er 1 − x Dy x ) Al 2 journal, October 2003

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Title: Anisotropy induced anomalies in Dy_1$$-$$xTb_xAl₂

Magnetism of Ho $_{1 - x}$ Tb $_{x}$ Al $_{2}$ alloys: Critical dependence of a first-order transition on Tb concentration
journal, December 2011

Magnetic properties of single-crystalDyAl2
journal, July 2005

A 3–350 K fast automatic small sample calorimeter
journal, November 1997

Spin reorientation transitions in Ho _1-x Dy _x Al ₂ alloys
journal, November 2011

Magnetic compensation phenomenon and the sign reversal in the exchange bias field in a single crystal of Nd _0.75 Ho _0.25 Al ₂
journal, May 2009

Experimental and theoretical study of the magnetic and structural properties of ${Er}_{0.75} {Tb}_{0.25} {Al}_{2}$
journal, August 2010

Magnetic Anisotropy and Conduction-Electron Exchange Polarization in Ferromagnetic (Rare-Earth) ${Al}_{2}$ Compounds
journal, January 1973

(Dy _0.5 Er _0.5 )Al ₂ : A large magnetocaloric effect material for low‐temperature magnetic refrigeration
journal, January 1994

Magnetic Properties of PrAl ₂ and ErAl ₂
journal, September 1968

Use of Stevens coefficients for the prediction of magnetic transitions in pseudobinary $R_{1 - x} R_{x}^{'}$ Al $_{2}$ alloys: Application to Tm $_{1 - x}$ Tb $_{x}$ Al $_{2}$
journal, April 2011

Unexpected magnetism, Griffiths phase, and exchange bias in the mixed lanthanide ${Pr}_{0.6}$ ${Er}_{0.4}$ ${Al}_{2}$
journal, June 2014

Magnetic properties of (rare earth)Al ₂ intermetallic compounds
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Disappearance and reappearance of magnetic ordering upon lanthanide substitution in $({Er}_{1 - x} {Dy}_{x}) {Al}_{2}$
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Multiple magnetic ordering phenomena evaluated by heat capacity measurements in ${Er}_{1 - x} {Tb}_{x} {Al}_{2}$ Laves-phase alloys
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A ferromagnet having no net magnetic moment
journal, September 1999

Unusual magnetism of ${Er}_{0.75} {Dy}_{0.25} {Al}_{2}$
journal, July 2007

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