of yfeo ball milling

Y 3 Fe 5 O 12 Prepared by Mechanosynthesis from Different

The precursors mixed in a stoichiometric ratio to obtain YIG were milled at room temperature in a shaker mixer mill with a ball powder weight ratio of 10 1 A partial synthesis of YIG was achieved after 9 h of milling time by using the three sources of iron however a significant fraction of the product was the perovskite YFeO 3...

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Hyperfine and magnetic properties of a Y La FeO x

Fritsch Pulverissette 7 planetary ball-mill using balls and vials made of Cr-hardened steel A ball-to-powder mass ratio of 20 and a rotation speed of 1500 rpm were used Oxygen supply was assured by periodically opening the vials at the time that small portions of powder were withdrawn in order to follow the evolution of the activation process...

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PDF Characterization of YIG nanopowders by

The samples produced by combining ball-milling of the starting powder and ceramic processing at 1573 K contained YIG and a smaller amount of YFeO 3 as found by XRD...

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PREPARATION AND EVALUATION OF THE COLOR

2-5 Pure YFeO 3 is a p-type indirect semiconductor with a band gap of 258 eV which is slightly wider than the band gap of Fe 2 O 3 Therefore it is a suitable candidate for water-splitting under visible light 6 7 YFeO 3 crystallizes in a distorted perovskite struc-ture with an orthorhombic unit cell The distortion...

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Journal of the Ceramic Society of Japan 128 3 135

method and high-energy ball milling27 The structural and magnetic properties of ferrites are strongly influenced by their microstructures and composition which are sensi-tive to the synthesis method28 Recently our group has reported that single-crystalline YFeO 3 particles with the perovskite structure can be fabricated through a facile...

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Crystal structure and multiferroic behavior of perovskite

Request PDF Crystal structure and multiferroic behavior of perovskite YFeO 3 We present a study of multiferroic properties of YFeO3 synthesized by means of high-energy ball milling assisted by...

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PDF Structural and magnetic properties of yttrium iron

Ball milling is a solid state method used to prepare garnets 15 It involves high sintering temperature product inhomogeneity and the milling process introduces some impurities 20 Recently many scientists use microwave hydrothermal method that involves fast heating process with higher reaction kinetics for garnet productions 20 25...

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PDF SHS of a superoxide in the Na

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PDF A structural and Mössbauer study of Y 3 Fe 5 O 12

YFeO 3 phase start to appear The amount High-energy ball milling has demonstrated to be a technique useful to promote the synthesis of nanostructured ferrites by mechanical activation of...

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Effect of mechanical milling induced strain and particle

The effect of mechanical milling induced strain and particle size reduction on structural micro-structural and magnetic properties of un-milled and milled polycrystalline samples of yttrium iron...

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Y3Fe5O12 Prepared by Mechanosynthesis from Different Iron

ball powder weight ratio of 10 1 A partial synthesis of YIG was achieved after 9 h of milling time by using the three sources of iron however a significant fraction of the product was the perovskite YFeO 3...

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SYNTHESIS STRUCTURE AND MAGNETIC PROPERTIES OF

SYNTHESIS STRUCTURE AND MAGNETIC PROPERTIES OF DISTORTED YxLa 1-xFeO 3 EFFECTS OF MECHANOCHEMICAL ACTIVATION AND COMPOSITION AA Cristóbal 1 PM Botta 1 EF Aglietti 2 MS Conconi 2 PG Bercoff 3 and JM Porto López 1 1 Instituto de Investigaciones en Ciencia y Tecnología de Materiales INTEMA CONICET- UNMdP JB Justo 4302 B7608FDQ Mar...

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Mechanosynthesis of YIG and GdIG A Structural and

Dec 02 2005 0183 32 We have investigated the mechanosynthesis of gadolinium and yttrium iron garnets by high-energy ball-milling of α-Fe2O3 and Gd2O3 or α-Fe2O3 and Y2O3 respectively followed by short thermal annealings conducted at moderate temperatur The samples were characterized by X-ray diffraction and Mössbauer spectroscopy in order to determine the influence of the milling time and...

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PDF Mechano

Steel balls of 127 cm in diameter and a steel cylindrical vial of 50 cm 3 were used setting up a ball to powder weight ratio of 10 1 This action was then applied alternatively with a 90 min cycle of milling followed by a 30 min break...

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Synthesis and characterization of LaFeO 3 powders prepared

Dec 11 2017 0183 32 Lanthanum ferrite LaFeO3 LF has raised considerable interest since it can be used in many applications such as solid-oxide fuel cell electrode sensor material H2O and ethanol and catalyst Since the conventional ceramic route of synthesis has some disadvantages mainly related to an exaggerated grain growth LF has been prepared by different methods including combustion...

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Structural Dielectric Semiconducting and optical

nanomaterials show improved electrical and optical properti High-energy ball milling is a simple and industrially viable method to produce nano-materials in large scale 7 In this work we prepared YFeO 3 nanoparticles by the mechanochemical synthesis method using high energy ball milling and investigated their dielectric semiconducting and...

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Synthesis of YFeO3 by thermal decomposition of

The effectiveness of the high-energy ball milling technique to promote the mechanosynthesis of the nanostructured ferrites by the mechanical activation of oxide compounds has been shown to yield...

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Microstructure and electrical properties of porous Y

powder mixture was mixed by ball-milling with an aqueous solution of organic monomers acrylamide AM and N NV-methylene-bis-acrylamide MBAM for more than 10 h After being initiated by ammo-nium persulfate and catalyzed by N N NV NV-tetrame-thylethylene-diamine the resulting slurry was molded on a vibrating table which gelled after a while...

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Mechanochemical Decomposition of Gd3Fe5O12 Garnet Phase

The reaction occurs in a steady-state manner during milling 19 20 21 22 23 24 25 High-energy ball milling has demonstrated to be a technique useful to promote the synthesis of...

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Pre and Post Effect of Swift Heavy Ion Irradiation on

On the application of external agencies eIII high energy ball milling etc on Y3 - excess YfG Y 4 Fe 4 l 12 formation of the yttrium orthoferrite YFeO P I phase rather than non- stoichiometric phase is more likely as there is small lattice energy difference between the two...

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Development of a Novel Melt Spinning

3 YFeO 3 Y 2Ti 2O 7 and Fe 2TiO 4 24 This study presents the development of a two-step melt spinning-based processing route for ODS steels Fe-Y and Fe-Y-Ti alloys are rapidly solidified fol-lowed by consolidation of the spun ribbons into bulk and simultaneous internal oxidation of any retained Y and/or Ti in solid solution into oxides...

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PDF Enhanced Multiferroic Properties of YFeO3 by Doping

Stoichiometric mixtures of Y2O3 Fe2O3 and Bi2O3 were mixed and milled for 5 h using a ball to powder weight ratio of 10 1 by high-energy ball milling The obtained powders were pressed at 1500...

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MECHANOCHEMICALLY ASSISTED SYNTHESIS OF YTTRIUM

milling which can be attributed to a canting in the alignment of the two sub-lattices in the ball-mill using balls and vials made of Cr-hardened steel A ball-to-powder mass ratio of 20 synthesis of YFeO 3 because of its high thermodynamic stability 22...

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Influence of synthesis procedure on the YIG formation

May 01 2003 0183 32 The samples produced by combining ball-milling of the starting powder and ceramic processing at 1573 K contained YIG and a smaller amount of YFeO 3 as found by XRD It was shown that high-energy ball-milling with stainless steel can be substituted by milling with agate bowl and balls thus decreasing the contamination of the oxide system due...

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Enhanced Multiferroic Properties of YFeO 3 by

Tthe present work studied the cationic substitution of Y 3 by Bi 3 on the crystal structure of orthorhombic YFeO 3 and its effect over magnetic dielectric and electric properties of multiferroic yttrium orthoferrite Stoichiometric mixtures of Y 2 O 3 Fe 2 O 3 and Bi 2 O 3 were mixed and milled for 5 h using a ball to powder weight ratio of 10 1 by high-energy ball milling...

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Crystal structure and multiferroic behavior of perovskite

We present a study of multiferroic properties of YFeO3 synthesized by means of high-energy ball milling assisted by annealing at low temperature Fe2O3 and Y2O3 powders were mixed in a stoichiometric ratio milled for 5 h pressed and annealed at temperature from 773 to 1073 K X-ray diffraction XRD analysis confirmed the formation of single...

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Temperature and frequency dependence of dielectric

Dec 15 2020 0183 32 Ceramic YFeO 3 powders were successfully synthesized by high-energy ball milling followed by sintering at 1073 K for 6 h Crystal structure magnetic electric and dielectric properties were evaluated XRD pattern allowed determining a single orthorhombic YFeO 3 phase without the presence of...

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Synthesis of Y3Fe5O12 YIG assisted by high

Aug 01 2012 0183 32 It can be observed that the formation of yttrium ferrite with perovskite structure YFeO 3 ICDS 43260 orthoferrite starts after 1 h of milling and it is completed after 5 h This is shown by the presence of the peaks corresponding to this phase at this time together with the absence of Y 2 O 3 peaks The presence of Fe 2 O 3 ICDS 00-033-0664 is due to the excess of reactant introduced...

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Crystal structure and multiferroic behavior of perovskite

Sep 01 2018 0183 32 We present a study of multiferroic properties of YFeO 3 synthesized by means of high-energy ball milling assisted by annealing at low temperature Fe 2 O 3 and Y 2 O 3 powders were mixed in a stoichiometric ratio milled for 5 h pressed and annealed at temperature from 773 to 1073 K X-ray diffraction XRD analysis confirmed the formation of single-phase orthorhombic structure...

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PDF Dependence of developing magnetic hysteresis

Thus the sintering temperature for YIG prepared via high-energy ball milling HEBM is lower than that in the conventional ceramic processing which is normally 1573 K 7 This is due to higher reactivity between the finer-sized particles yielded by the HEBM technique The...

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