Growth and magnetocaloric effect of Na2Gd2(BO3)2O crystal

Yuwei Chen; Wang Liu; Zuhua Chen; Zhenxing Li; Jun Shen; Heng Tu; Guochun Zhang

doi:10.1016/j.jcrysgro.2024.127659

Growth and magnetocaloric effect of Na₂Gd₂(BO₃)₂O crystal

Yuwei Chen, Wang Liu, Zuhua Chen, Zhenxing Li, Jun Shen, Heng Tu^*, Guochun Zhang

^*Corresponding author for this work

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

High-quality Na₂Gd₂(BO₃)₂O crystals have been successfully grown using the top-seeded solution growth method (TSSG), employing a Na₂O - NaF - B₂O₃ flux system with optimal molar ratios of Na₂Gd₂(BO₃)₂O : Na₂CO₃ : NaF : H₃BO₃ = 1:2:6:4. The magnetic and magnetocaloric properties were investigated including magnetic susceptibility (χ), magnetization (M), and isothermal magnetic entropy change (−ΔS_m) measurements. Na₂Gd₂(BO₃)₂O exhibits a large magnetocaloric effect with a maximum − ΔS_m of 41.6 J·kg⁻¹·K⁻¹ at 2 K and 7 T, which is higher than that of commercial Gd₃Ga₅O₁₂ (GGG, −ΔS_m = 38.4 J·kg⁻¹·K⁻¹ at 2 K and 7 T) and most other Gd³⁺-based borates, showing the potential application in the field of magnetic refrigeration.

Original language	English
Article number	127659
Journal	Journal of Crystal Growth
Volume	633
DOIs	https://doi.org/10.1016/j.jcrysgro.2024.127659
Publication status	Published - 1 May 2024

Keywords

Crystal growth
Gd-based borate
Magnetocaloric effect

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10.1016/j.jcrysgro.2024.127659

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@article{061ca720ef3746db9976e79f8aa4cdf1,

title = "Growth and magnetocaloric effect of Na2Gd2(BO3)2O crystal",

abstract = "High-quality Na2Gd2(BO3)2O crystals have been successfully grown using the top-seeded solution growth method (TSSG), employing a Na2O - NaF - B2O3 flux system with optimal molar ratios of Na2Gd2(BO3)2O : Na2CO3 : NaF : H3BO3 = 1:2:6:4. The magnetic and magnetocaloric properties were investigated including magnetic susceptibility (χ), magnetization (M), and isothermal magnetic entropy change (−ΔSm) measurements. Na2Gd2(BO3)2O exhibits a large magnetocaloric effect with a maximum − ΔSm of 41.6 J·kg−1·K−1 at 2 K and 7 T, which is higher than that of commercial Gd3Ga5O12 (GGG, −ΔSm = 38.4 J·kg−1·K−1 at 2 K and 7 T) and most other Gd3+-based borates, showing the potential application in the field of magnetic refrigeration.",

keywords = "Crystal growth, Gd-based borate, Magnetocaloric effect",

author = "Yuwei Chen and Wang Liu and Zuhua Chen and Zhenxing Li and Jun Shen and Heng Tu and Guochun Zhang",

note = "Publisher Copyright: {\textcopyright} 2024 Elsevier B.V.",

year = "2024",

month = may,

day = "1",

doi = "10.1016/j.jcrysgro.2024.127659",

language = "English",

volume = "633",

journal = "Journal of Crystal Growth",

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TY - JOUR

T1 - Growth and magnetocaloric effect of Na2Gd2(BO3)2O crystal

AU - Chen, Yuwei

AU - Liu, Wang

AU - Chen, Zuhua

AU - Li, Zhenxing

AU - Shen, Jun

AU - Tu, Heng

AU - Zhang, Guochun

PY - 2024/5/1

Y1 - 2024/5/1

N2 - High-quality Na2Gd2(BO3)2O crystals have been successfully grown using the top-seeded solution growth method (TSSG), employing a Na2O - NaF - B2O3 flux system with optimal molar ratios of Na2Gd2(BO3)2O : Na2CO3 : NaF : H3BO3 = 1:2:6:4. The magnetic and magnetocaloric properties were investigated including magnetic susceptibility (χ), magnetization (M), and isothermal magnetic entropy change (−ΔSm) measurements. Na2Gd2(BO3)2O exhibits a large magnetocaloric effect with a maximum − ΔSm of 41.6 J·kg−1·K−1 at 2 K and 7 T, which is higher than that of commercial Gd3Ga5O12 (GGG, −ΔSm = 38.4 J·kg−1·K−1 at 2 K and 7 T) and most other Gd3+-based borates, showing the potential application in the field of magnetic refrigeration.

AB - High-quality Na2Gd2(BO3)2O crystals have been successfully grown using the top-seeded solution growth method (TSSG), employing a Na2O - NaF - B2O3 flux system with optimal molar ratios of Na2Gd2(BO3)2O : Na2CO3 : NaF : H3BO3 = 1:2:6:4. The magnetic and magnetocaloric properties were investigated including magnetic susceptibility (χ), magnetization (M), and isothermal magnetic entropy change (−ΔSm) measurements. Na2Gd2(BO3)2O exhibits a large magnetocaloric effect with a maximum − ΔSm of 41.6 J·kg−1·K−1 at 2 K and 7 T, which is higher than that of commercial Gd3Ga5O12 (GGG, −ΔSm = 38.4 J·kg−1·K−1 at 2 K and 7 T) and most other Gd3+-based borates, showing the potential application in the field of magnetic refrigeration.

KW - Crystal growth

KW - Gd-based borate

KW - Magnetocaloric effect

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U2 - 10.1016/j.jcrysgro.2024.127659

DO - 10.1016/j.jcrysgro.2024.127659

M3 - Article

AN - SCOPUS:85187703164

SN - 0022-0248

VL - 633

JO - Journal of Crystal Growth

JF - Journal of Crystal Growth

M1 - 127659

ER -

Growth and magnetocaloric effect of Na₂Gd₂(BO₃)₂O crystal

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