Size-dependent magnetocaloric effect in GdVO4 nanoparticles

Ruan, M.Y.; Yang, Chun-Chuen; Wang, L.; Jin, Pei-Qing; Guo, Zhenhu; Wei, Xiaoyong; Wu, Wei-Chun

doi:10.1016/j.jallcom.2021.162351

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…Rare earth ion Gd 3+ has a large spin ground state, low spin excited state, and negligible magnetic anisotropy, meanwhile, the magnetic coupling between ions is very weak, allowing for a substantial MCE. As a result, Gd 3+ -based materials are favorable to for the fabrication of low-temperature magnetic refrigerants. − Several Gd 3+ -based compounds, such as cluster molecules, − coordination polymers, − metallic oxides, − and inorganic salts, ,− have been used as magnetic refrigerants in the sub-Kelvin temperature range in the last few decades. Inorganic Gd 3+ -based borates are considered to be promising candidates for magnetocaloric materials because of outstanding physicochemical stability, high thermal conductivity, and diverse molecular structures. ,,− By investigating the ICSD database and earlier published papers, it is noted that Gd 3+ -based borate chloride Ba 2 Gd(BO 3 ) 2 C1 − has high Gd content, light molecular mass, and small-size ligands, which are beneficial to MCE. − Moreover, the Cl atoms in the structure coordinate to metal ions rather than B atoms, which provides the stable frame construction, making it easy for processing and applications.…”

Section: Introductionmentioning

confidence: 99%

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba₂Gd(BO₃)₂X (X = F, Cl)

Chen,

Gong,

Guo

et al. 2023

Inorg. Chem.

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A new Gd3+-containing borate Ba2Gd(BO3)2F has been successfully grown via the high-temperature solution method using BaF2-NaF-B2O3 flux. Ba2Gd(BO3)2F crystallizing in the orthorhombic space group Pnma is with lattice parameters a = 7.571(4) Å, b = 10.424(5) Å, c = 8.581(4) Å, α = β = γ = 90°, and Z = 2. Its three-dimensional framework was constructed from interesting pinwheel-like [Gd(BO3)F]∞ layers bridged by sharing [BO3]3–, which is different from the [Gd(BO3)]∞ layer in the model structure Ba2Gd(BO3)2Cl. The magnetic measurements indicated that Ba2Gd(BO3)2F has a larger magnetocaloric effect with −ΔS m,max = 27.82 J·kg–1·K–1at 2 K and 9 T than that of Ba2Gd(BO3)2Cl under the same conditions. Moreover, thermal stability, infrared spectrum (IR), and ultraviolet–visible-near-infrared diffuse reflectance spectrum were carried out to characterize the title compounds. The first-principles computations also looked into the electronic band structures, densities of states, and refractive indices.

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Section: Introductionmentioning

confidence: 99%

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba₂Gd(BO₃)₂X (X = F, Cl)

Chen,

Gong,

Guo

et al. 2023

Inorg. Chem.

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“…The behavior of magnetic nanoparticles is influenced by finite size and interface effects, which become more pronounced as the particle size decreases, leading to a larger surface-to-volume ratio [23]. Furthermore, the ability to vary particle sizes in nanoparticle systems provides a means to finely control the entropy change across magnetic phase transitions, allowing for precise manipulation of this property [24][25][26]. These effects greatly influence the thermal properties of magnetic nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Magnetic Cooling through Tailoring the Size-Dependent Magnetocaloric Effect of Iron Nanoparticles Embedded in Titanium Nitride Thin Films

Sarkar,

Jordan,

Kebede

et al. 2023

Magnetochemistry

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The magnetocaloric effect (MCE) in iron (Fe) nanoparticles incorporated within a titanium nitride (TiN) thin-film matrix grown using pulsed laser deposition (PLD) is investigated in this study. The study demonstrates the ability to control the entropy change across the magnetic phase transition by varying the size of the Fe nanoparticles. The structural characterization carried out using X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM), and scanning transmission electron (TEM) showed that TiN films are (111) textured, while the Fe-particles are mostly spherical in shapes, are single-crystalline, and have a coherent structure with the surrounding TiN thin-film matrix. The TiN thin-film matrix was chosen as a spacer layer since it is nonmagnetic, is highly corrosion-resistive, and can serve as an excellent conduit for extracting heat due to its high thermal conductivity (11 W/m K). The magnetic properties of Fe–TiN systems were investigated using a superconducting quantum interference device (SQUID) magnetometer. In-plane magnetic fields were applied to record magnetization versus field (M–H) and magnetization versus temperature (M–T) curves. The results showed that the Fe–TiN heterostructure system exhibits a substantial isothermal entropy change (ΔS) over a wide temperature range, encompassing room temperature to the blocking temperature of the Fe nanoparticles. Using Maxwell’s relation and analyzing magnetization–temperature data under different magnetic fields, quantitative insights into the isothermal entropy change (ΔS) and magnetocaloric effect (MCE) were obtained for the Fe–TiN heterostructure system. The study points out a considerable negative change in ΔS that reaches up to 0.2 J/kg K at 0.2 T and 300 K for the samples with a nanoparticle size on the order of 7 nm. Comparative analysis revealed that Fe nanoparticle samples demonstrate higher refrigeration capacity (RC) in comparison to Fe thin-film multilayer samples, with the RC increasing as the Fe particle size decreases. These findings provide valuable insights into the potential application of Fe–TiN heterostructures in solid-state cooling technologies, highlighting their enhanced magnetocaloric properties.

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Giant Magnetocaloric Effect and Magnetic Critical Behavior in Polycrystalline GdPO4

Fang,

Pan,

et al. 2024

J Supercond Nov Magn

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Size-dependent magnetocaloric effect in GdVO4 nanoparticles

Cited by 6 publications

References 33 publications

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba₂Gd(BO₃)₂X (X = F, Cl)

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba₂Gd(BO₃)₂X (X = F, Cl)

Enhanced Magnetic Cooling through Tailoring the Size-Dependent Magnetocaloric Effect of Iron Nanoparticles Embedded in Titanium Nitride Thin Films

Giant Magnetocaloric Effect and Magnetic Critical Behavior in Polycrystalline GdPO4

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Size-dependent magnetocaloric effect in GdVO4 nanoparticles

Cited by 6 publications

References 33 publications

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba2Gd(BO3)2X (X = F, Cl)

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba2Gd(BO3)2X (X = F, Cl)

Enhanced Magnetic Cooling through Tailoring the Size-Dependent Magnetocaloric Effect of Iron Nanoparticles Embedded in Titanium Nitride Thin Films

Giant Magnetocaloric Effect and Magnetic Critical Behavior in Polycrystalline GdPO4

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Product

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Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba₂Gd(BO₃)₂X (X = F, Cl)

Improvement on Magnetocaloric Effect through Structural Evolution in Gadolinium Borate Halides Ba₂Gd(BO₃)₂X (X = F, Cl)