Effects of Sn4+ doping and oxygen vacancy on magnetic and electrical properties of yttrium iron garnet prepared by sol-gel method

Duong, Nguyen Phuc; Nguyet, Dao Thi Thuy; Loan, To Thanh; Anh, Luong Ngoc; Soontaranon, Siriwat; Klysubun, Wantana; Nga, Trần Thị Việt

doi:10.1016/j.ceramint.2020.10.226

Cited by 14 publications

(3 citation statements)

References 23 publications

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“…It is notable that oxygen‐deficient YIG films have also been obtained in other experimental works by pulsed laser deposition and magnetron sputtering. [ 27 ] It is reported that tetrahedral Fe sites are easier to change valence when oxygen content decreases, [ 28 ] which also supports our conclusion. We can see that regardless of slight oxygen deficiency, the garnet structure is well maintained as shown in Figures 1f and 2, which is similar to the scenario in the literature.…”

Section: Resultssupporting

confidence: 90%

A Strategy for Enhancing Perpendicular Magnetic Anisotropy in Yttrium Iron Garnet Films

Meng,

Chen,

et al. 2024

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In future information storage and processing, magnonics is one of the most promising candidates to replace traditional microelectronics. Yttrium iron garnet (YIG) films with perpendicular magnetic anisotropy (PMA) have aroused widespread interest in magnonics. Obtaining strong PMA in a thick YIG film with a small lattice mismatch (η) has been fascinating but challenging. Here, a novel strategy is proposed to reduce the required minimum strain value for producing PMA and increase the maximum thickness for maintaining PMA in YIG films by slight oxygen deficiency. Strong PMA is achieved in the YIG film with an η of only 0.4% and a film thickness up to 60 nm, representing the strongest PMA for such a small η reported so far. Combining transmission electron microscopy analyses, magnetic measurements, and a theoretical model, it is demonstrated that the enhancement of PMA physically originates from the reduction of saturation magnetization and the increase of magnetostriction coefficient induced by oxygen deficiency. The Gilbert damping values of the 60‐nm‐thick YIG films with PMA are on the order of 10−4. This strategy improves the flexibility for the practical applications of YIG‐based magnonic devices and provides promising insights for the theoretical understanding and the experimental enhancement of PMA in garnet films.

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Section: Resultssupporting

confidence: 90%

A Strategy for Enhancing Perpendicular Magnetic Anisotropy in Yttrium Iron Garnet Films

Meng,

Chen,

et al. 2024

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“…Fe 3+ ions in sublattice (d) have radius rFe3+ (d) = 0.49 Å but Fe 3+ ions in sublattice (a) have radius rFe3+ (a) = 0.645 Å [1]. The fact is that V 5+ ions with radius rV5+ = 0.335 are suitable for the position in (d) sublattice [1] while In 3+ ions with rIn3+ = 0.79 or Sn 4+ ions with rSn4+ = 0.69 are suitable in (a) sublattice [1,14]. Zn 2+ ions (rZn2+ = 0.745 Å) are said to be suitable for the position in the octahedral sublattice of YIG particles as in Garcia's study [15,16].…”

Section: Introduction *mentioning

confidence: 99%

Magnetic, DC Electrical, and Impedance Properties of Zn Doped Yttrium Iron Garnet Nanoparticles

Nguyet

Duong

Anh

2023

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Y3Fe5-xZnxO12 with x = 0; 0.02; 0.04; 0.06; 0.08; 0.1 (YIG) particle materials were fabricated by sol-gel method combined with heat treatment at 900 °C and 1,000 °C with different annealing times (2 h and 5 h) and heating rates (5 °C/min and 2 °C/min). X-ray diffraction patterns show that the obtained samples are single crystalline phases at the condition of an annealing temperature of 900 °C for 5 h and a heating rate of 2 degrees/min. FESEM images of the samples show particle sizes from the submicron to the micrometer. The magnetization of the samples decreases as the doping concentration increases. I-V characteristics and complex impedance spectra at room temperature of samples were measured. The results show that the resistivity value of the doped samples decreases in the range of 5-6 orders in magnitude compared with that of the pure YIG sample. The contribution of the grain boundaries to the impedance was analyzed. The conducting process is explained due to the tunneling of charge carriers across the grain boundary.

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“…Several methods have been developed for synthesizing yttrium iron garnet and its rare-earth containing counterparts. These include co-precipitation [ 23 , 24 ], the sol-gel method [ 25 , 26 , 27 ], high-energy ball milling [ 28 ], mechanochemical processing [ 29 ], glycine assisted combustion method [ 30 ], citrate and solid-state reaction method [ 31 ], anion resin exchange precipitation method [ 19 ], or the micro-pulling-down method [ 32 ]. The most common way to obtain rare-earth iron garnets is reactive sintering between oxides [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

Reactive Sintering of Dysprosium-Iron Garnet via a Perovskite-Hematite Solid State Reaction and Physical Properties of the Material

et al. 2022

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In this paper, we report on a successful synthesis of dysprosium iron garnet Dy3Fe5O12 (DyIG) by a reactive synthesis method involving dysprosium iron perovskite and hematite. Phase formation was traced using dilatometry, and XRD measurements attested to the formation of the desired structure. Samples with relative density close to 97% were fabricated. The samples were characterized using vibrating sample magnetometry, dielectric spectroscopy, and UV-Vis-NIR spectroscopy. Magnetic properties were probed in temperatures between 80 and 700 K with a maximum applied field of 1 kOe. The measurements revealed several effects: the compensation of magnetic moments at a certain temperature, the inversion of the magnetocaloric effect, and the ability to measure the Curie temperature of the material. Activation energy was determined from UV-Vis-NIR and dielectric spectroscopy measurements. Characteristic magnetic temperatures and activation energy values of the samples were similar to bulk DyIG obtained using other methods.

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Effects of Sn4+ doping and oxygen vacancy on magnetic and electrical properties of yttrium iron garnet prepared by sol-gel method

Cited by 14 publications

References 23 publications

A Strategy for Enhancing Perpendicular Magnetic Anisotropy in Yttrium Iron Garnet Films

A Strategy for Enhancing Perpendicular Magnetic Anisotropy in Yttrium Iron Garnet Films

Magnetic, DC Electrical, and Impedance Properties of Zn Doped Yttrium Iron Garnet Nanoparticles

Reactive Sintering of Dysprosium-Iron Garnet via a Perovskite-Hematite Solid State Reaction and Physical Properties of the Material

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