TY - JOUR
T1 - Magnetocaloric effect in LiLn6O5(BO3)3 (Ln = Gd, Tb, Dy, and Ho)
AU - Chen, Yuwei
AU - Liu, Wang
AU - Feng, Jingcheng
AU - Guo, Ruixin
AU - Fan, Feidi
AU - Shen, Jun
AU - Zhang, Guochun
AU - Tu, Heng
N1 - Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/6
Y1 - 2022/6
N2 - A series of lanthanide-rich oxyborates LiLn6O5(BO3)3 (LLnOB, Ln = Gd, Tb, Dy, and Ho) have been synthesized using high temperature solid state method. Their magnetic and magnetocaloric properties were investigated upon magnetic susceptibility (χ), magnetization (M), and isothermal magnetic entropy change (−ΔSm) measurements. The maximum − ΔSm, max of LiGd6O5(BO3)3 is 44.7 J kg−1 K−1 at 4 K and Δμ0H = 9 T, which is higher than the one of commercial Gd3Ga5O12 (GGG, −ΔSm, max = 41.8 J kg−1 K−1 at 2 K for Δμ0H = 9 T). For LiHo6O5(BO3)3, −ΔSm, max is 14.12 J kg−1 K−1 at 3 K and Δμ0H = 2 T, which is also larger than that of Ho3Ga5O12 (HoGG, −ΔSm, max = 4.38 J kg−1 K−1 at 2 K for Δμ0H = 2 T) and Dy3Ga5O12 (DGG, −ΔSm, max = 11.0 J kg−1 K−1 at 2 K for Δμ0H = 2 T). These results indicate that LiGd6O5(BO3)3 and LiHo6O5(BO3)3 may be competitive candidates for applications as magnetic refrigerants. Moreover, thermal stability, infrared spectrum (IR), and ultraviolet–visible-near-infrared diffuse reflectance spectrum (UV–Vis-NIR) were carried out to characterize the title compounds.
AB - A series of lanthanide-rich oxyborates LiLn6O5(BO3)3 (LLnOB, Ln = Gd, Tb, Dy, and Ho) have been synthesized using high temperature solid state method. Their magnetic and magnetocaloric properties were investigated upon magnetic susceptibility (χ), magnetization (M), and isothermal magnetic entropy change (−ΔSm) measurements. The maximum − ΔSm, max of LiGd6O5(BO3)3 is 44.7 J kg−1 K−1 at 4 K and Δμ0H = 9 T, which is higher than the one of commercial Gd3Ga5O12 (GGG, −ΔSm, max = 41.8 J kg−1 K−1 at 2 K for Δμ0H = 9 T). For LiHo6O5(BO3)3, −ΔSm, max is 14.12 J kg−1 K−1 at 3 K and Δμ0H = 2 T, which is also larger than that of Ho3Ga5O12 (HoGG, −ΔSm, max = 4.38 J kg−1 K−1 at 2 K for Δμ0H = 2 T) and Dy3Ga5O12 (DGG, −ΔSm, max = 11.0 J kg−1 K−1 at 2 K for Δμ0H = 2 T). These results indicate that LiGd6O5(BO3)3 and LiHo6O5(BO3)3 may be competitive candidates for applications as magnetic refrigerants. Moreover, thermal stability, infrared spectrum (IR), and ultraviolet–visible-near-infrared diffuse reflectance spectrum (UV–Vis-NIR) were carried out to characterize the title compounds.
UR - http://www.scopus.com/inward/record.url?scp=85129245203&partnerID=8YFLogxK
U2 - 10.1016/j.cryogenics.2022.103476
DO - 10.1016/j.cryogenics.2022.103476
M3 - Article
AN - SCOPUS:85129245203
SN - 0011-2275
VL - 124
JO - Cryogenics
JF - Cryogenics
M1 - 103476
ER -