Magnetic and magnetocaloric properties of Gd1-xYx2NiSi3 compounds (x = 0.25, 0.5, 0.75)

doi:10.1016/j.jmmm.2019.04.021

This content will become publicly available on April 6, 2020

Title: Magnetic and magnetocaloric properties of ${({Gd}_{1 - x} Y_{x})}_{2} {NiSi}_{3}$ compounds (x = 0.25, 0.5, 0.75)

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Abstract

Here, we report the magnetic dilution effect on the magnetic and magnetocaloric properties of ${({Gd}_{1 - x} Y_{x})}_{2} {NiSi}_{3}$ (x = 0.25, 0.5, 0.75) compounds by partial substitution of Y ions in Gd ₂NiSi ₃. The X-ray diffraction studies indicate all theses compounds form in AlB ₂ type hexagonal crystal structure. The dc magnetic measurements reveal the compounds undergo antiferromagnetic like phase transition below 11.5, 7.2, and 3.1 K for x = 0.25, 0.5 and 0.75 compositions, respectively. The magnetic ground state of the compounds becoming increasingly fragile with the increase in Y concentration, and results in magnetic field induced ferromagnetic transition. Such change in magnetic spin configuration is responsible for moderately large magnetic entropy change (ΔS _M ~ 19.3 J/kg-K, 14.8 J/kg-K and 9.8 J/kg-K for (x = 0.25, 0.5, 0.75), respectively, for ΔH = 7T) in the cryogenic temperature region. The relative cooling power (RCP) has also been measured for all the compounds that appears to be modest (~503 J/kg for 7T magnetic field change) for x = 0.25 analogue and reduces further with magnetic dilution effect caused by Y substitution.

Authors:

^[1]; Mazumdar, Chandan ^[2]; Ranganathan, R. ^[2]

Saha Inst. of Nuclear Physics, Bidhannagar, Kolkata (India); Ames Lab. and Iowa State Univ., Ames, IA (United States)
Saha Inst. of Nuclear Physics, Bidhannagar, Kolkata (India)

Publication Date:: 2019-04-06

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

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division

OSTI Identifier:: 1526284

Report Number(s):: IS-J-9948
Journal ID: ISSN 0304-8853

Grant/Contract Number:: AC02-07CH11358

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Magnetism and Magnetic Materials

Additional Journal Information:: Journal Volume: 484; Journal Issue: C; Journal ID: ISSN 0304-8853

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Intermetallics; Rare earths; Magentization; Magnetocaloric effect

Citation Formats


                    Pakhira, Santanu, Mazumdar, Chandan, and Ranganathan, R. Magnetic and magnetocaloric properties of Gd1-xYx2NiSi3 compounds (x = 0.25, 0.5, 0.75).  United States: N. p., 2019. 
        Web.  doi:10.1016/j.jmmm.2019.04.021.

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                    Pakhira, Santanu, Mazumdar, Chandan, & Ranganathan, R. Magnetic and magnetocaloric properties of Gd1-xYx2NiSi3 compounds (x = 0.25, 0.5, 0.75).  United States.  doi:10.1016/j.jmmm.2019.04.021.

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                    Pakhira, Santanu, Mazumdar, Chandan, and Ranganathan, R. Sat .  
        "Magnetic and magnetocaloric properties of Gd1-xYx2NiSi3 compounds (x = 0.25, 0.5, 0.75)".  United States.  doi:10.1016/j.jmmm.2019.04.021.

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@article{osti_1526284,

  title        = {Magnetic and magnetocaloric properties of Gd1-xYx2NiSi3 compounds (x = 0.25, 0.5, 0.75)},

  author       = {Pakhira, Santanu and Mazumdar, Chandan and Ranganathan, R.},

  abstractNote = {Here, we report the magnetic dilution effect on the magnetic and magnetocaloric properties of Gd1-xYx2NiSi3(x = 0.25, 0.5, 0.75) compounds by partial substitution of Y ions in Gd2NiSi3. The X-ray diffraction studies indicate all theses compounds form in AlB2 type hexagonal crystal structure. The dc magnetic measurements reveal the compounds undergo antiferromagnetic like phase transition below 11.5, 7.2, and 3.1 K for x = 0.25, 0.5 and 0.75 compositions, respectively. The magnetic ground state of the compounds becoming increasingly fragile with the increase in Y concentration, and results in magnetic field induced ferromagnetic transition. Such change in magnetic spin configuration is responsible for moderately large magnetic entropy change (ΔSM ~ 19.3 J/kg-K, 14.8 J/kg-K and 9.8 J/kg-K for (x = 0.25, 0.5, 0.75), respectively, for ΔH = 7T) in the cryogenic temperature region. The relative cooling power (RCP) has also been measured for all the compounds that appears to be modest (~503 J/kg for 7T magnetic field change) for x = 0.25 analogue and reduces further with magnetic dilution effect caused by Y substitution.},

  doi          = {10.1016/j.jmmm.2019.04.021},

  journal      = {Journal of Magnetism and Magnetic Materials},

  number       = C,

  volume       = 484,

  place        = {United States},

  year         = {2019},

  month        = {4}

}

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This content will become publicly available on April 6, 2020

Title: Magnetic and magnetocaloric properties of Gd 1 - x Y x 2 NiSi 3 compounds (x = 0.25, 0.5, 0.75)

Abstract

Citation Formats

Title: Magnetic and magnetocaloric properties of ${({Gd}_{1 - x} Y_{x})}_{2} {NiSi}_{3}$ compounds (x = 0.25, 0.5, 0.75)