Enhancement in Curie Temperature of Yttrium Iron Garnet by Doping with Neodymium

Baños-López, E.; Jesús, F. Sánchez-De; Cortés-Escobedo, C.A.; Barba-Pingarrón, Arturo; Bolarín-Miró, A.M.

doi:10.3390/ma11091652

Cited by 26 publications

(14 citation statements)

References 31 publications

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“…33 Figure 4 shows the changes of T C during heating and cooling and are marked with black dashed lines; T C decreases by roughly 10 K with increasing content of Er from x = 0 to 0.20. Considering a reported T C of YIG at around 560 K, 34 the T C of the Er:YIG slightly decreases by substituting Er into YIG.…”

Section: Resultsmentioning

confidence: 99%

Structural, Optical, and Magnetic Properties of Erbium-Substituted Yttrium Iron Garnets

et al. 2022

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We synthesized a series of slightly erbium-substituted yttrium iron garnets (Er:YIG), Y 3– x Er x Fe 5 O 12 at different Er concentrations ( x = 0, 0.01, 0.05, 0.10, and 0.20) using a solid-state reaction and investigated their structural, magnetic, and optical properties as a function of Er concentration. The volume of the unit cell slightly increased with Er concentration and Er atoms predominately replaced Y atoms in the dodecahedrons of YIG. The optical properties exhibited certain decreases in reflectance in the 1500–1600 nm wavelength range due to the presence of Er 3+ . Despite the many unpaired 4f electrons in Er 3+ , the total magnetic moments of Er:YIG showed similar trends with temperatures and magnetic fields above 30 K. An X-ray magnetic circular dichroism study confirmed the robust Fe 3d magnetic moments. However, the magnetic moments suddenly decreased to below 30 K with Er substitution, and the residual magnetism ( M R ) and coercive field ( H C ) in the magnetic hysteresis loops decreased to below 30 K with Er substitution. This implies that Er substitution in YIG has a negligible effect on magnetic properties over a wide temperature range except below 30 K where the Er 4f spins are coupled antiparallel to the majority Fe 3d spins. Our studies demonstrated that above 30 K the magnetic properties of YIG are retained even with Er substitution, which is evidence that the Er doping scheme is applicable for YIG-based magneto-optical devices in the mid-infrared regime.

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Section: Resultsmentioning

confidence: 99%

Structural, Optical, and Magnetic Properties of Erbium-Substituted Yttrium Iron Garnets

et al. 2022

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“…López et al observed an increasing trend of lattice parameter in the study of neodymium-substituted YIG. [21] Figure 3 shows the SEM patterns of all the Y 2 GdFe 5 O 12 samples sintered at different temperatures. From the patterns, it can be clearly seen that the grain growth increases and the porosity decreases with the sintering temperature.…”

Section: Resultsmentioning

confidence: 99%

Structural, Magnetic, and Dielectric Properties of Y₂GdFe₅O₁₂ Synthesized by Hydrothermal Method

Ramesh¹,

Reddy

Sravanthi

et al. 2023

Macromolecular Symposia

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In this study, the structural and magnetodielectric properties of gadolinium (Gd 3+ ) substituted yttrium iron garnet (Y 2 GdFe 5 O 12 ) are investigated. The hydrothermal synthesis method is used to prepare the powders. The prepared powders are sintered at three different temperatures. X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM) are used to characterize the structural and morphological properties of the sintered samples. The dielectric properties are measured over a frequency range of 100 Hz-1 MHz. A vibration sample magnetometer (VSM) is used to determine the magnetic parameters of the samples and it is observed that the magnetic properties of the samples depend on the sintering temperature. The thermal change in magnetization parameter and the transition temperature of the samples are measured using the pulse magnetometer by applying 5kOe magnetic field. The collected results are analyzed and discussed using various theories.

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“…Strong [65] Moderate [68] Strong [69] Permeability High [70] Moderate [71] Moderate [30] Magnetic Loss Low [72] Low [71] Low [30] Frequency Range…”

Section: Yig Gdig Dyig Saturation Magnetizationmentioning

confidence: 99%

Rare Earth Based Iron Garnet – A Survey on Its Magnetic Properties

Priyanshu,

Nath,

Bandyopadhyay

2023

IOP Conf. Ser.: Mater. Sci. Eng.

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Garnet is a well-known material for a long-time by the scientific community but still today scientists are focusing on it due to the rapid application-based development of this material. When rare earth iron garnets (REIG) are formed by substituting the rare-earth ions with unfilled 4fn orbitals, the magnetic properties of the iron garnets exhibit an interesting characteristic. For rare earth elements, the 4f electrons are shielded from the crystal field as these are surrounded by 5s, 5p, or 5d orbitals. That is why the exchange field between rare earth ions is much smaller than that between iron-iron and rare earth-iron. The magnetic moment of REIG will be both due to the orbital and spin moment. The magnetization of REIG at different temperatures (T) is due to the dominant contribution of different sublattices. At high and low T, the dominant sublattices are iron and rare earth sublattices respectively. The magnetic and non-magnetic ion substitution in REIG also play a very important role in deciding their magnetic property. In this review, we have tried to figure out the basic underlying physics behind the origin of remarkable magnetic behavior in REIG.

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Enhancement in Curie Temperature of Yttrium Iron Garnet by Doping with Neodymium

Cited by 26 publications

References 31 publications

Structural, Optical, and Magnetic Properties of Erbium-Substituted Yttrium Iron Garnets

Structural, Optical, and Magnetic Properties of Erbium-Substituted Yttrium Iron Garnets

Structural, Magnetic, and Dielectric Properties of Y₂GdFe₅O₁₂ Synthesized by Hydrothermal Method

Rare Earth Based Iron Garnet – A Survey on Its Magnetic Properties

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Enhancement in Curie Temperature of Yttrium Iron Garnet by Doping with Neodymium

Cited by 26 publications

References 31 publications

Structural, Optical, and Magnetic Properties of Erbium-Substituted Yttrium Iron Garnets

Structural, Optical, and Magnetic Properties of Erbium-Substituted Yttrium Iron Garnets

Structural, Magnetic, and Dielectric Properties of Y2GdFe5O12 Synthesized by Hydrothermal Method

Rare Earth Based Iron Garnet – A Survey on Its Magnetic Properties

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Structural, Magnetic, and Dielectric Properties of Y₂GdFe₅O₁₂ Synthesized by Hydrothermal Method