Cubic GdFeO3 particle by a simple hydrothermal synthesis route and its photoluminescence and magnetic properties

Zhang, Youjin; Ao, Zheng; Yang, Xiaozhi; He, Hongmei; Fan, Yun; Yao, Chengpeng

doi:10.1039/c2ce26233a

Cited by 43 publications

(16 citation statements)

References 26 publications

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“…In all of these syntheses, consistent with the chemically- and enzymatically-synthesized nanoparticles described in this paper, the nanoparticles were paramagnetic at room temperature and antiferromagnetic at low temperature. Importantly, the room-temperature magnetization of the nanoparticles described here is significantly greater than that of analogous chemically-synthesized Ln x Fe y O z (Ln = Gd, Ho) samples reported previously [ 30 , 31 , 32 ].…”

Section: Resultscontrasting

confidence: 57%

“…The saturation magnetization of the samples might be reduced by the significant presence of non-magnetic precipitates of single-element oxides (as noted earlier, the reduction of individual salts failed to form a magnetic precipitate) with only a small percentage of the MNPs of Fe–Gd–O or Fe–Ho–O present. As previously reported in the case of LnFeO 3 (Ln = rare earth), phase-selective or homogeneous composition is difficult to achieve during chemical syntheses; the hydrothermal and co-precipitation synthesis of GdFeO 3 gave an amorphous precipitate, and the combustion route yielded a crystalline powder [ 30 , 31 ]. In another study, the reactant ratios were varied to obtain mono-phasic HoFeO 3 [ 32 ].…”

Section: Resultsmentioning

confidence: 99%

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Enzymatic Synthesis of Magnetic Nanoparticles

Kolhatkar

Dannongoda

Kourentzi

et al. 2015

IJMS

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We report the first in vitro enzymatic synthesis of paramagnetic and antiferromagnetic nanoparticles toward magnetic ELISA reporting. With our procedure, alkaline phosphatase catalyzes the dephosphorylation of l-ascorbic-2-phosphate, which then serves as a reducing agent for salts of iron, gadolinium, and holmium, forming magnetic precipitates of Fe45±14Gd5±2O50±15 and Fe42±4Ho6±4O52±5. The nanoparticles were found to be paramagnetic at 300 K and antiferromagnetic under 25 K. Although weakly magnetic at 300 K, the room-temperature magnetization of the nanoparticles found here is considerably greater than that of analogous chemically-synthesized LnxFeyOz (Ln = Gd, Ho) samples reported previously. At 5 K, the nanoparticles showed a significantly higher saturation magnetization of 45 and 30 emu/g for Fe45±14Gd5±2O50±15 and Fe42±4Ho6±4O52±5, respectively. Our approach of enzymatically synthesizing magnetic labels reduces the cost and avoids diffusional mass-transfer limitations associated with pre-synthesized magnetic reporter particles, while retaining the advantages of magnetic sensing.

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Section: Resultscontrasting

confidence: 57%

Section: Resultsmentioning

confidence: 99%

Enzymatic Synthesis of Magnetic Nanoparticles

Kolhatkar

Dannongoda

Kourentzi

et al. 2015

IJMS

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“…Cubic GdFeO 3 particle by a simple hydrothermal synthesis route and its photoluminescence and magnetic properties were investigated [49]. Through the investigation of the photoluminescence and magnetic properties, the orthorhombic cubic GdFeO 3 particles exhibited very good doped luminescence, which emits different colored light when doped with different rare earth elements.…”

Section: Various Classes Of Multiferroic Compounds On the Basis Of Stmentioning

confidence: 99%

Multiferroic ABO3 Transition Metal Oxides: a Rare Interaction of Ferroelectricity and Magnetism

et al. 2019

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This review article summarizes the development of different kinds of materials that evolved interest in all field of science particularly on new nano-materials which possess both electric and magnetic properties at the nanoscale. Materials of such kind possessing both magnetic and electric properties have tremendous applications and own an intensive research activity. These materials induce new properties which are particularly important in electronic and magnetic devices and even in the materials where magnetic property will change by electric field or vice versa. The discovery of such ferroic properties for scientific applications is the need of hour and spreads an exciting new area that has technical and commercial potential for the discovery of advanced materials. In recent studies, the actual path by which the multiferroic properties exist has been focused and new metal oxide compounds were discovered. The understanding of the structure of these compounds through research describes a wide range of applications and the challenges of these multiferroic materials that need to be explored. In this study, fundamental aspects and structural variations of ternary transition metal oxides have been covered which possess novel properties in storage devices such as hard disk platters and magnetic read heads.

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“…De tal manera que la GdFeO3 en fase ortorrómbica se ha sintetizado mediante varias técnicas como síntesis hidrotermal (Zhang et al, 2012), sol-gel (Karoblis et al, 2021, coprecipitación (Albadi et al, 2020), microondas (Tang et al, 2014), combustión (Chavan & Tyagi, 2005), poliol, etc. (Cortés-Escobedo et al, 2014) y también se han estudiado sus propiedades, ferroeléctricas, magnéticas, fotoluminiscentes, entre otras (Prakash et al, 2014).…”

Section: Introductionunclassified

Estudio teórico de las propiedades estructurales, electrónicas y ópticas de la ferrita de gadolinio en fase cúbica.

Rosas¹,

Arteaga-Varela²,

Castillo³

et al. 2021

aactm

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En el presente trabajo se realizó un estudio teórico de las propiedades estructurales, electrónicas y ópticas para la perovskita ferrita de gadolinio (GdFeO3) con estructura cúbica, obtenidas mediante cálculos ab-initio basados en la Teoría del Funcional de la Densidad implementado en el Código SIESTA. Se usaron pseudopotenciales de Troullier-Martin que conservan la norma con parametrizaciones de correlación e intercambio de Perdew, Burke y Ernzerhof (PBE) dentro de la aproximación del gradiente generalizado (GGA) y Ceperley y Alder dentro de la aproximación de densidad local (LDA). El parámetro de red calculado con estas aproximaciones es a0= 3.841 Å y a0= 3.701 Å usando la aproximación de GGA y LDA, respectivamente. Por otro lado, se realizó el cálculo de Estructura de Bandas y Densidad de Estados encontrando que el material tiene un comportamiento metálico. Finalmente, la parte imaginaria de la función dieléctrica muestra un pico de absorción significativo a una energía de 0.409 eV para GGA y 0.267 eV para LDA en el rango infrarrojo perteneciente a los modos vibracionales del sistema.

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Cubic GdFeO3 particle by a simple hydrothermal synthesis route and its photoluminescence and magnetic properties

Cited by 43 publications

References 26 publications

Enzymatic Synthesis of Magnetic Nanoparticles

Enzymatic Synthesis of Magnetic Nanoparticles

Multiferroic ABO3 Transition Metal Oxides: a Rare Interaction of Ferroelectricity and Magnetism

Estudio teórico de las propiedades estructurales, electrónicas y ópticas de la ferrita de gadolinio en fase cúbica.

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