Microstructural and physical properties of samarium orthoferrite thin films by the sol–gel method

Baqiah, Hussein; Kechik, Mohd Mustafa Awang; Al‐Hada, Naif Mohammed; Liu, Jian; Xu, Shicai; Zhang, Na; Li, Qiang; Wang, Zhenxing; Al-Gaashani, Rashad; Wang, Jihua

doi:10.1016/j.rinp.2022.105446

Cited by 10 publications

(4 citation statements)

References 33 publications

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“…In this work, the increase in energy gap may be related to the increase in lattice spacing as unit cell volume increases as well as crystallite size. The relationship obtained between E g and microstrain is that they are directly proportional; the trend is similar to that of another work [38].…”

Section: Magnetic Performancesupporting

confidence: 88%

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Influence of Synthetic Conditions on the Crystal Structure, Optical and Magnetic Properties of o-EuFeO3 Nanoparticles

et al. 2023

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In this paper, powders consisting of o-EuFeO3 nanoparticles were obtained by the co-precipitation method using two different precipitating agents (NH3 and (NH4)2CO3 solutions; corresponding products were denoted as samples S.1 and S.2, respectively) and followed by annealing for 1 h at 750, 850, and 950 °C. The magnetic, optical, and physicochemical characteristics of S.1 and S.2 were evaluated by means of EDXS (energy dispersive X-ray spectroscopy), PXRD (powder X-ray diffraction), TG/DSC (thermogravimetry/differential scanning calorimetry), FTIR (Fourier-transform infrared spectroscopy), TEM (transmission electron microscopy), UV-Vis DRS (Ultraviolet–Visible diffuse reflectance spectroscopy), and VSM (vibrating-sample magnetometry). The o-EuFeO3 structure was shown to be stable at annealed temperatures, and t = 850 °C is recommended for synthesizing such substances. The average size of o-EuFeO3 crystals is around 27 (S.1) and 34 nm (S.2). The results revealed a homogeneous distribution of the main elements on the samples’ surfaces, with morphology consisting of isometric and highly agglomerated nanoparticles. The bandgap value (Eg) of the synthesized samples was 2.31 (S.1) and 2.39 eV (S.2). Besides, these nanoparticles appeared to possess paramagnetic behavior.

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Section: Magnetic Performancesupporting

confidence: 88%

“…The calculation results are shown in Table 1. The variation of Eg can be attributed to more than one reason; a detailed discussion refers to [36][37][38]. In this work, the increase in energy gap may be related to the increase in lattice spacing as unit cell volume increases as well as crystallite size.…”

Section: Diffuse Reflectance Spectroscopymentioning

confidence: 80%

Influence of Synthetic Conditions on the Crystal Structure, Optical and Magnetic Properties of o-EuFeO3 Nanoparticles

et al. 2023

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“…[24,[49][50][51][52][53] The material's direct bandgap, as determined by the Tauc plot method, is approximately 2.68 eV. This bandgap is considered to be narrow and, is similar to that of compounds HoFeO 3 -850 (2.62 eV [40] ), SmFeO 3 -800 (2.72 eV [54] ), is a little higher than YFeO 3 -900 (2.11 eV [55] ), and LaFeO 3 -800 (2.10 eV [48] ). As is well known, the material's bandgap is established by its molecular structure; [56] the E g variation of orthoferrites can be related to some reasons, including particle and crystallite size, microstrain and oxygen defects, as well as bond length (FeÀ O) and bond angle (FeÀ OÀ Fe).…”

Section: Optical Propertymentioning

confidence: 99%

“…As is well known, the material's bandgap is established by its molecular structure; [56] the E g variation of orthoferrites can be related to some reasons, including particle and crystallite size, microstrain and oxygen defects, as well as bond length (FeÀ O) and bond angle (FeÀ OÀ Fe). [54,55,57]…”

Section: Optical Propertymentioning

confidence: 99%

Structural, Optical, and Magnetic Properties of o‐TbFeO₃ Nanomaterials Synthesized by the co‐Precipitation Method

Anh Tien,

Kim Hoang,

Olegovna Mittova

et al. 2023

ChemistrySelect

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Following the co‐precipitation method for producing terbium orthoferrite (TbFeO3), the final products were denoted as TbFeO3‐650, −750, and −850. A single‐phase of orthorhombic TbFeO3 crystals (o‐TbFeO3) was obtained with a calcination temperature of up to 850 °C, while in the range of 650–750 °C there was still a small amount of terbium and iron oxide phases. The average size of o‐TbFeO3 crystallites for the TbFeO3‐850 sample was about 76 nm and was larger than that of TbFeO3‐650 (~45 nm) and TbFeO3‐750 (~47 nm). The o‐TbFeO3 crystal structure in all samples was found to be distorted. In the applied field from −15 to +15 kOe, all of the samples had low values of coercive field (5–11 ⋅ 10−3 Oe) but high values of net magnetization (2.06–2.40 emu ⋅ g−1); the samples appeared to behave as paramagnetic materials. It was shown that the TbFeO3‐850 sample has slightly better magnetic properties than the two others. An average grain size of about 79 nm was found in the TbFeO3‐850 sample, which exhibited a morphology of sphere‐like shapes with highly agglomerated grains. The TbFeO3‐850 sample demonstrated a high absorbance at wavelengths of 400–600 nm, with a direct bandgap of about 2.68 eV.

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Structural, optical and magnetic properties of the nanosized perovskite-like DyFeO3 prepared by modified co-precipitation method

Nguyen,

Do,

Nguyen

et al. 2024

J Mater Sci: Mater Electron

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Microstructural and physical properties of samarium orthoferrite thin films by the sol–gel method

Cited by 10 publications

References 33 publications

Influence of Synthetic Conditions on the Crystal Structure, Optical and Magnetic Properties of o-EuFeO3 Nanoparticles

Influence of Synthetic Conditions on the Crystal Structure, Optical and Magnetic Properties of o-EuFeO3 Nanoparticles

Structural, Optical, and Magnetic Properties of o‐TbFeO₃ Nanomaterials Synthesized by the co‐Precipitation Method

Structural, optical and magnetic properties of the nanosized perovskite-like DyFeO3 prepared by modified co-precipitation method

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Microstructural and physical properties of samarium orthoferrite thin films by the sol–gel method

Cited by 10 publications

References 33 publications

Influence of Synthetic Conditions on the Crystal Structure, Optical and Magnetic Properties of o-EuFeO3 Nanoparticles

Influence of Synthetic Conditions on the Crystal Structure, Optical and Magnetic Properties of o-EuFeO3 Nanoparticles

Structural, Optical, and Magnetic Properties of o‐TbFeO3 Nanomaterials Synthesized by the co‐Precipitation Method

Structural, optical and magnetic properties of the nanosized perovskite-like DyFeO3 prepared by modified co-precipitation method

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Structural, Optical, and Magnetic Properties of o‐TbFeO₃ Nanomaterials Synthesized by the co‐Precipitation Method