Effect of morphology on the magnetic properties of Gd2O3 nanotubes

Paul, Rima; Sen, Pintu; Das, I.

doi:10.1016/j.physe.2016.01.038

Cited by 10 publications

(5 citation statements)

References 17 publications

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“…Magnetic and magnetocaloric study Figure 5(a) shows the magnetisation as a function of temperature, M(T), measured in ZFC condition in the temperature range of 5 to 100 K. All samples show paramagnetic behaviour even at low temperatures. The increase in magnetisation with decreasing temperature is consistent with previous reports of long-range magnetic ordering [27,28,29]. Furthermore, to probe the magnetic behaviour at low temperatures, magnetisation as a function of field, M(H) at 5 K, was measured up to 50 K Oe and is plotted in figure 5(b).…”

Section: Bet Surface Area Analysissupporting

confidence: 87%

Magnetocaloric properties of shape-dependent nanostructured Gd₂O₃ oxide particles

Neupane¹,

Casey²,

Sultana³

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Single-phase Gd2O3 nanostructures with different morphologies, such as nanoparticles, nanorods, nanospheres, and nanoplates, were synthesised. Gd2O3 1D nanorods and 2D nanoplate architectures were prepared via the hydrothermal method, while 3D hollow nanospheres were synthesised via homogeneous precipitation. The magnetic and magnetocaloric properties of Gd2O3 nanostructured particles were studied as functions of temperature and field. The material demonstrated typical paramagnetic behaviour in the measured temperature range of 3–300 K. The magnetic entropy change (−ΔS M ) was determined from the magnetic isotherms measured in the 3–38 K temperature range in the field up to 5 T. The maximum change in magnetic entropy Δ S M max value 11.2 J kg−1 K−1 for the nanoplate, 9.4 J kg−1 K−1 for the nanorod, 9.2 J kg−1 K−1 for the nanosphere, and 10.7 J kg−1 K−1 for the nanoparticle sample was observed at temperature 5 K for the magnetic field of 5 T. Owing to large Δ S M max , these Gd2O3 nanostructured particles would be considered promising materials for magnetic refrigeration at cryogenic temperatures.

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Section: Bet Surface Area Analysissupporting

confidence: 87%

Magnetocaloric properties of shape-dependent nanostructured Gd₂O₃ oxide particles

Neupane¹,

Casey²,

Sultana³

et al. 2023

Adv. Nat. Sci: Nanosci. Nanotechnol.

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“…where the definitions of local fields given by Equation ( 9) have been used in matrix elements 𝐻 (4) (𝑠 1, 𝑠 2 , 𝑠 3 , 𝑠 4 ). Then, the magnetizations 𝑚 1 , 𝑚 2 , 𝑚 3 , 𝑚 4 can be found by numerical solution of the nonlinear equation system given by Equation (11). Core, shell and the total magnetization can be obtained by using Equation (8).…”

Section: Model and Formulationmentioning

confidence: 99%

“…Nanotubes are promising materials for obtaining efficient MCE. For instance, large MCE, associated with the sharp change in magnetization of the 𝐺𝑑 2 𝑂 3 nanotubes has been shown experimentally [10,11]. Another example of experimental MCE in nanotubes is the structural defect-induced MCE in 𝑁𝑖 0.3 𝑍𝑛 0.7 𝐹𝑒 2 𝑂 4 graphene (NZF/G) nanocomposites [12].…”

mentioning

confidence: 95%

Magnetic materials as an environmentally friendly cooling and heating systems: Tuning magnetocaloric properties in the magnetic nanotubes

ÇAM,

AKINCI

2023

International Journal of Energy Studies

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The magnetocaloric properties - which is important for designing energy efficient and environment friendly heating and cooling systems- of the magnetic nanotube are constituted by arbitrary core spin values Sc and the shell spin values Ss have been investigated by mean field approximation. Several quantities have been calculated during this investigation, such as isothermal magnetic entropy change, full width at half maximum value and the refrigerant capacity, in order to suggest more efficient heating and cooling. The variation of these quantities with the values of the spins and exchange interaction between the core and shell is determined. Besides, recently experimentally observed double peak behavior in the variation of the isothermal magnetic entropy change with the temperature is obtained for the nanotube.

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“…Nanotubes are promising materials for obtaining efficient MCE. For instance, large MCE, associated with the sharp change in magnetization of the Gd 2 O 3 nanotubes has been shown experimentally [10,11]. Another example of experimental MCE in nanotubes is the structural defect-induced MCE in N i 0.3 Zn 0.7 F e 2 O 4 graphene (NZF/G) nanocomposites [12].…”

Section: Introductionmentioning

confidence: 95%

Magnetocaloric Properties of the Ising nanotube

Akıncı

2020

Preprint

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The magneticaloric properties of the Ising nanotube constituted by arbitrary core spin values S c and the shell spin values S s have been investigated by mean field approximation. During this investigation, several quantities have been calculated, such as isothermal magnetic entropy change, full width at half maximum value and the refrigerant capacity. The variation of these quantities with the values of the spins and exchange interaction between the core and shell is determined. Besides, recently experimentally observed double peak behavior in the variation of the isothermal magnetic entropy change with the temperature is obtained for the nanotube.

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Effect of morphology on the magnetic properties of Gd2O3 nanotubes

Cited by 10 publications

References 17 publications

Magnetocaloric properties of shape-dependent nanostructured Gd₂O₃ oxide particles

Magnetocaloric properties of shape-dependent nanostructured Gd₂O₃ oxide particles

Magnetic materials as an environmentally friendly cooling and heating systems: Tuning magnetocaloric properties in the magnetic nanotubes

Magnetocaloric Properties of the Ising nanotube

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Effect of morphology on the magnetic properties of Gd2O3 nanotubes

Cited by 10 publications

References 17 publications

Magnetocaloric properties of shape-dependent nanostructured Gd2O3 oxide particles

Magnetocaloric properties of shape-dependent nanostructured Gd2O3 oxide particles

Magnetic materials as an environmentally friendly cooling and heating systems: Tuning magnetocaloric properties in the magnetic nanotubes

Magnetocaloric Properties of the Ising nanotube

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Magnetocaloric properties of shape-dependent nanostructured Gd₂O₃ oxide particles

Magnetocaloric properties of shape-dependent nanostructured Gd₂O₃ oxide particles