Preparation of bismuth substituted yttrium iron garnet powder and thin film by the metal-organic decomposition method

Lee, Hanju; Yoon, Youngwoon; Kim, Songhui; Yoo, Hyung Keun; Melikyan, Harutyun; Danielyan, Emma; Babajanyan, Arsen; Ishibashi, Takayuki; Friedman, Barry; Lee, Kiejin

doi:10.1016/j.jcrysgro.2011.06.048

Cited by 31 publications

(13 citation statements)

References 35 publications

(47 reference statements)

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“…In comparison to previous results on the bulk-like films reported by Wittekoek, in here, we can notice smaller ε 1i amplitude and an absorption edge shift from 2.5 to 2.2 eV. However, similar measurement performed on thin single crystal Bi:YIGs films reported absorption data similar to our results [42][43][44]. Therefore we atributed this disprepancy to the fact that we have been studying thin single crystaline Bi:YIGs films.…”

Section: Spectroscopic Ellipsometrysupporting

confidence: 82%

Optical and magneto-optical properties of Bi substituted yttrium iron garnets prepared by metal organic decomposition

Jesenská

Yoshida

Shinozaki

et al. 2016

Opt. Mater. Express

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In this work, we present a systematic study of optical and magneto-optical properties of Y 3-x Bi x Fe 5 O 12 thin films with various Bi concentrations (x = 1.5, 2, 2.5, 3) prepared by Metal Organic Decomposition on Gd 3 Ga 5 O 12 (100) substrates. We used magneto-optical spectroscopy and spectroscopic ellipsometry. Spectral dependence of complex refraction indexes obtained from ellipsometric measurements revealed increasing optical absorption with increasing Bi concentrations. Faraday and Kerr magneto-optical spectra measured in the photon energy range from 1.5 to 5.5 eV clearly demonstrated that the increasing Bi concentration enhances the spin-orbit coupling and influences the magnetooptical effect. Using the magneto-optical and ellipsometric experimental data we deduced a spectral dependence of complete permittivity tensor in a wide spectral range. Comparison of obtained results with the results reported on Liquid Phase Epitaxy bulk-like garnets with small Bi concentrations showed agreement and confirmed a high optical and magneto-optical quality of investigated films.

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Section: Spectroscopic Ellipsometrysupporting

confidence: 82%

Optical and magneto-optical properties of Bi substituted yttrium iron garnets prepared by metal organic decomposition

Jesenská

Yoshida

Shinozaki

et al. 2016

Opt. Mater. Express

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“…These residual phases may be formed due to insufficient sintering time or temperature. The proposed crystallization process can be described by following reactions [35,36]:…”

Section: Characterization Of the Samplesmentioning

confidence: 99%

High saturation magnetization, low coercivity and fine YIG nanoparticles prepared by modifying co-precipitation method

Hosseinzadeh

Behboudnia

Jamilpanah

et al. 2019

Journal of Magnetism and Magnetic Materials

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Nanoparticles with their specific properties newly have drawn a great deal of attention of researchers [1-3]Yttrium iron Garnet magnetic nanoparticles (YIG-NPs) are promising materials with novel applications in microwave, spintronics, magnonics, and magneto-optical devices.However, achieving stable and remarkable magnetic YIG-NPs has been remaining as a great challenge. In this paper, synthesized YIG-NPs by modifying co-precipitation (MCP) method is reported. Structural and magnetic properties of final products are compared to those of the materials prepared by citrate-nitrate (CN) method. Smaller crystals and particle size have been found by MCP method comparing to that of synthesized by CN method. Using a relatively low annealing temperatures for both sets of samples (~700 °C), the final YIG samples prepared by MCP method show more structural purity than those made by CN method. Higher saturation magnetization (M s ) and lower coercivity (H c ) are observed in MCP YIG sample (23.23 emu/g and 30.1 Oe) than the CN prepared YIG sample (16.43 emu/g and 44.95 Oe). The Curie temperature is measured to be 569 °C for the MCP YIG sample determined from set of M s measurement at different temperatures ranging from 80-600 K. These findings lead to significant improvement in quality of synthesized (synthetic methods) of YIG-NPs.

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“…The MOD procedure introduced by Azevedo et. al is used for thin film deposition [11][12][13][14]. Their procedure consists of preparation of metal-organic carboxylates, which exhibit high compatibility to organic solvents, result in better final thin film properties.…”

Section: Introductionmentioning

confidence: 99%

“…Typically, the metal carboxylates used in the preparation of ceramic oxide materials are 2EH salts which are dispersed in aromatic solvents [10,12,13,15,16]. Metal 2EH have found wide application such as metal-organic precursors, catalysts for ring opening polymerizations and drier agent in paint industries [17].…”

Section: Introductionmentioning

confidence: 99%

Structural and magnetic study of metallo-organic YIG powder using 2-ethylhexanoate carboxylate-based precursors

et al. 2019

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The crystallization and magnetic behavior of yttrium iron garnet (YIG) prepared by metalloorganic decomposition (MOD) method are discussed. The chemistry and physics related to synthesis of iron and yttrium carboxylates based on 2-ethylhexanoic acid (2EHA) are studied, since no literature was found which elucidates synthesis of metallo-organic precursor of YIG in spite of the literatures of doped YIG samples such as Bi-YIG. Typically, the metal carboxylates used in preparation of ceramic oxide materials are 2-ethylhexanoate (2EH) solvents. Herein, the synthesis, thermal behavior and solubility of yttrium and iron 2EH used in synthesis of YIG powder by MOD are reported. The crystallization and magnetic parameters, including saturation magnetization and coercivity of these samples, smoothly change as a function of the annealing temperature. It is observed that high sintering temperature of 1300 to 1400 °C promotes the diffraction peaks of YIG, therefore, we can conclude that the formation of YIG in MOD method increases the crystallization temperature. The maximum value of saturation magnetization and minimum value of coercivity and remanence are observed for the sample sintered at 1200°C which are 13.7 emu/g, 10.38 Oe and 1.5 emu/g, respectively. This study cites the drawbacks in chemical synthesis of metallo-organic based YIG production. 2

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Preparation of bismuth substituted yttrium iron garnet powder and thin film by the metal-organic decomposition method

Cited by 31 publications

References 35 publications

Optical and magneto-optical properties of Bi substituted yttrium iron garnets prepared by metal organic decomposition

Optical and magneto-optical properties of Bi substituted yttrium iron garnets prepared by metal organic decomposition

High saturation magnetization, low coercivity and fine YIG nanoparticles prepared by modifying co-precipitation method

Structural and magnetic study of metallo-organic YIG powder using 2-ethylhexanoate carboxylate-based precursors

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