Eu-doped α-Fe2O3 nanoparticles with modified magnetic properties

Freyria, Francesca Stefania; Barrera, Gabriele; Tiberto, P.; Belluso, Elena; Levy, Davide; Saracco, Guido; Allia, Paolo; Garrone, Edoardo; Bonelli, Barbara

doi:10.1016/j.jssc.2013.03.018

Cited by 41 publications

(12 citation statements)

References 40 publications

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“…Nevertheless, for such compounds many elements of this theory are already in good agreement with results recorded by Jiao et al [21], Soo and Jae [22], Alaparthi et al [23], and Zhu et al [24]. In fact, Jiao et al [ Lee et al [33], and Freyria et al [34].…”

Section: Lattice Compatibility Theory Lct Fundaments and Analysissupporting

confidence: 84%

PERFORMANCE OF Eu-DOPED OXIDE FILMS FOR ADVANCED MATERIALS ENGINEERING AND ENERGY CONVERSION: ARGUMENTS FOR THE LATTICE COMPATIBILITY THEORY (LCT)

Boubaker¹,

Colantoni²,

Petkova³

et al. 2016

Jour. Mater. Sci. Eng. Adv. Tech.

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In this study, some arguments for the recently discussed materials-related Lattice Compatibility Theory (LCT) are presented. Fundaments are based on the recorded behaviour disparity of some rare earth doped oxides. Incorporation of + 3 Eu ions during growth has been demonstrated through Urbach tailing and Faraday effect analyze, implying the possibility of loading of similar rare earth elements species into the nano-channels of ternary and quaternary materials for energy conversion.

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Section: Lattice Compatibility Theory Lct Fundaments and Analysissupporting

confidence: 84%

PERFORMANCE OF Eu-DOPED OXIDE FILMS FOR ADVANCED MATERIALS ENGINEERING AND ENERGY CONVERSION: ARGUMENTS FOR THE LATTICE COMPATIBILITY THEORY (LCT)

Boubaker¹,

Colantoni²,

Petkova³

et al. 2016

Jour. Mater. Sci. Eng. Adv. Tech.

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“…and lengths of 100 nm; Freyria et al [32] reported rain-like Fe 2 O 3 , but it was nano-particle, rather than micro-particle. The effects of the temperature and time of hydrothermal reaction on the morphology and size of the products were investigated.…”

Section: Structural and Morphological Characteristicsmentioning

confidence: 99%

Facile synthesis of α-Fe2O3 micro-ellipsoids by surfactant-free hydrothermal method for sub-ppm level H2S detection

Lin

Wang

et al. 2016

Materials & Design

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The α-Fe 2 O 3 micro-ellipsoids were prepared using a facile hydrothermal process without any surfactant or template, and their morphological, structural and H 2 S sensing properties were investigated.The α-Fe 2 O 3 showed uniform micro-ellipsoids with a long axis diameter of 1.7 µm and a short axis diameter of 1.2 µm. Detailed structural analysis confirmed that the synthesized α-Fe 2 O 3 micro-ellipsoids were compact particles with a hexagonal structure. Gas sensor base on the α-Fe 2 O 3 micro-ellipsoids showed excellent response, short response/recovery time (less than 90 s and 30 s, respectively), low detection concentration (~0.5 ppm), good long-term stability and excellent selectivity towards H 2 S gas at the optimized operating temperature of 350 o C. The sensing mechanism of the sensor based on the α-Fe 2 O 3 micro-ellipsoids towards H 2 S was discussed.

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“…Freyria et al [18]. Mathevula et al [19] have shown the enhancement in optical properties with doping of Holmium (Ho).…”

Section: Enhancement In Magnetisation Below and Above The Morin Tempementioning

confidence: 99%

Structural, Dielectric and Magnetic properties of Yttrium doped Hematite Nanoparticle

Kumar¹,

Ahlawat²,

Singh³

et al. 2021

Preprint

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Applicability of magnetic crystalline nanoparticles particularly in the diagnostic field of health care and magnetic data storage makes them highly important for various technological researches. Novel properties of prepared nanoparticles can be tuned with doping of rare earth metals. In the present research, Yttrium (Y) doped hematite nanocrystalline samples have been prepared at various compositions, Fe2 − 2xY2xO3 (x = 0.00, 0.02, 0.05, 0.08, 0.10) and magnetic properties are seen sensitive with dopants concentration. The variation in grain size from FE-SEM is found well collaborated with the crystallite size and strain determined by XRD measurements. Rietveld refinement of XRD patterns reveals the formation of rhombohedral symmetry with Rˉ3c space group of the samples. The dielectric and magnetic properties show wiggling behaviour with the concentration of doping metal. A shift towards weakly ferromagnetic conduct like behaviour has been confirmed with the doping of Y in hematite crystalline particles.

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Eu-doped α-Fe2O3 nanoparticles with modified magnetic properties

Cited by 41 publications

References 40 publications

PERFORMANCE OF Eu-DOPED OXIDE FILMS FOR ADVANCED MATERIALS ENGINEERING AND ENERGY CONVERSION: ARGUMENTS FOR THE LATTICE COMPATIBILITY THEORY (LCT)

PERFORMANCE OF Eu-DOPED OXIDE FILMS FOR ADVANCED MATERIALS ENGINEERING AND ENERGY CONVERSION: ARGUMENTS FOR THE LATTICE COMPATIBILITY THEORY (LCT)

Facile synthesis of α-Fe2O3 micro-ellipsoids by surfactant-free hydrothermal method for sub-ppm level H2S detection

Structural, Dielectric and Magnetic properties of Yttrium doped Hematite Nanoparticle

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