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Title: The structural and magnetic properties of Pr{sub 1−x}Er{sub x}Al{sub 2}

Abstract

We report on the effect of Er addition to PrAl{sub 2} on the lattice parameters, magnetic behavior, heat capacity, and magnetocaloric effect by using x-ray diffraction, magnetization, and heat capacity measurements. Unlike Pr{sub 0.6}Er{sub 0.4}Al{sub 2}, other alloys we studied in the pseudobinary (Pr{sub 1−x}Er{sub x})Al{sub 2} system do not exhibit a sharp peak in heat capacity with the application of magnetic field. Both the cubic lattice parameter and the Curie temperature decrease with increasing Er concentration. The nuclear specific heat coefficient decreases from 660 mJ K mol{sup −1} for x = 0.05 to a nearly negligible value for x = 0.95. The magnetic entropy and adiabatic temperature change varies from 2 to 4 J mol{sup −1} K{sup −1} and 2.5 to 5 K at ΔH = 20 kOe for x = 0.05 to 0.95, respectively. These values of the magnetocaloric effect are comparable to those of the other rare-earth dialuminides systems.

Authors:
 [1]; ;  [1];  [2]
  1. The Ames Laboratory, U.S. Department of Energy, Iowa State University, Ames, Iowa 50011-3020 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
22409998
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM ALLOYS; COMPARATIVE EVALUATIONS; CONCENTRATION RATIO; CUBIC LATTICES; CURIE POINT; ENTROPY; ERBIUM ALLOYS; LATTICE PARAMETERS; MAGNETIC FIELDS; MAGNETIC PROPERTIES; MAGNETIZATION; NUCLEAR SPECIFIC HEAT; PRASEODYMIUM ALLOYS; X-RAY DIFFRACTION

Citation Formats

Pathak, Arjun K., E-mail: pathak138@ameslab.gov, Gschneidner, K. A., Pecharsky, V. K., and Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011-2300. The structural and magnetic properties of Pr{sub 1−x}Er{sub x}Al{sub 2}. United States: N. p., 2015. Web. doi:10.1063/1.4906431.
Pathak, Arjun K., E-mail: pathak138@ameslab.gov, Gschneidner, K. A., Pecharsky, V. K., & Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011-2300. The structural and magnetic properties of Pr{sub 1−x}Er{sub x}Al{sub 2}. United States. doi:10.1063/1.4906431.
Pathak, Arjun K., E-mail: pathak138@ameslab.gov, Gschneidner, K. A., Pecharsky, V. K., and Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011-2300. Thu . "The structural and magnetic properties of Pr{sub 1−x}Er{sub x}Al{sub 2}". United States. doi:10.1063/1.4906431.
@article{osti_22409998,
title = {The structural and magnetic properties of Pr{sub 1−x}Er{sub x}Al{sub 2}},
author = {Pathak, Arjun K., E-mail: pathak138@ameslab.gov and Gschneidner, K. A. and Pecharsky, V. K. and Department of Materials Science and Engineering, Iowa State University, Ames, Iowa 50011-2300},
abstractNote = {We report on the effect of Er addition to PrAl{sub 2} on the lattice parameters, magnetic behavior, heat capacity, and magnetocaloric effect by using x-ray diffraction, magnetization, and heat capacity measurements. Unlike Pr{sub 0.6}Er{sub 0.4}Al{sub 2}, other alloys we studied in the pseudobinary (Pr{sub 1−x}Er{sub x})Al{sub 2} system do not exhibit a sharp peak in heat capacity with the application of magnetic field. Both the cubic lattice parameter and the Curie temperature decrease with increasing Er concentration. The nuclear specific heat coefficient decreases from 660 mJ K mol{sup −1} for x = 0.05 to a nearly negligible value for x = 0.95. The magnetic entropy and adiabatic temperature change varies from 2 to 4 J mol{sup −1} K{sup −1} and 2.5 to 5 K at ΔH = 20 kOe for x = 0.05 to 0.95, respectively. These values of the magnetocaloric effect are comparable to those of the other rare-earth dialuminides systems.},
doi = {10.1063/1.4906431},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}