Investigation of solid state reaction in 3Y2O3:5Fe2O3 by DTG(M), x-ray and IR spectroscopic methods

Береги, Э.; Hild, Erzsébet; Sztaniszláv, A.; Rudnay, G.-Y.; Sztatisz, J.

doi:10.1016/0304-8853(84)90140-9

Cited by 7 publications

(3 citation statements)

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“…Beregi et al 15 Godoi et al 17 co-precipitated yttrium and iron hydroxides from an aqueous solution of yttrium and iron chlorides, plus …”

Section: Synthesis By Powder Mixing Methodsmentioning

confidence: 99%

“…Then, it was dry pressed with 500 kg/cm 2 in a steel die in order to obtain rings with the following dimensions: 2 cm external diameter, 1 cm internal diameter and 0.4 cm height. The sintering process 15,25 It may be concluded that exothermic peak at 810 o C, as seen in Figure 1a, corresponds to crystallization of the mixed anhydrous oxide of yttrium, gadolinium and iron, obtaining crystalline yttriumgadolinium-iron garnet. Table 1 presents some results of the magnetic properties of the ceramic rings, sintered at 1270 and 1320 o C. They were determined by using Walker Scientific AMH-20 Hysteresisgrapher.…”

Section: Methodsmentioning

confidence: 99%

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Detailed crystallization study of co-precipitated Y1.47Gd1.53Fe5O12 and relevant magnetic properties

Serra¹,

Ogasawara²,

Ogasawara³

2007

Quím. Nova

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Recebido em 6/6/06; aceito em 15/3/07; publicado na web em 30/7/07The crystallization process of co-precipitated Y 1.5 Gd 1. . Dry pressed rings were sintered at 1270 and 1320 o C, increasing the grain-size from 3.1 to 6.5 μm, the theoretical density by 87.6 to 95.3% and decreasing H c from 2.9725 to 1.4005 Oe. Additionally, H c increased when the frequency of the hysteresis graph varied from 60 Hz to 10 kHz, the curie temperature was 282.4 o C and M s equalled 9.25 emu g -1 (0.17 kG) agreeing well with the B s -value of the hysteresis graph and literature values.

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“…Beregi et al 15 Godoi et al 17 co-precipitated yttrium and iron hydroxides from an aqueous solution of yttrium and iron chlorides, plus …”

Section: Synthesis By Powder Mixing Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Detailed crystallization study of co-precipitated Y1.47Gd1.53Fe5O12 and relevant magnetic properties

Serra¹,

Ogasawara²,

Ogasawara³

2007

Quím. Nova

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“…Investigations of the solid state, reactions between Fe,O,, Y,03, CaCO, and ZrO, , mixed in a molar ratio corresponding to that of Y2,6Ca,,4 Fe,,6 Zr0,40,2 revealed a two-step process for the garnet formation [3]. For a better understanding of this reaction the solid state reactions of a series of mixtures with decreasing Fe,O, content were investigated by X-ray diffraction and DTG(M) [4] methods.…”

Section: Introductionmentioning

confidence: 99%

Garnet forming solid state reactions in FeYCaZrO systems with different Y-Fe ratios

Sztaniszláv¹,

Balla²,

Farkas-Jahnke³

1989

Phys. Scr.

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Solid state reactions in the Fe2O3-Y2O3-CaCO3-ZrO2 mixtures with different Y-Fe ratios (0 < Fe2O3 < 4.75; 3.25 Y2O3; 1.0 CaCO3; 1.0 ZrO2 molar ratio) sintered at 700-1400°C were investigated by x-ray diffraction and DTG(M) methods. The DTG(M) method proved to be very effective in detecting very small amounts of magnetic constituents in the sample. The most interesting features of the reactions are the following:– At iron contents higher than 2.75 molar ratio in the temperature region 1200-1400°C Ca and Zr containing garnets are formed.– In mixtures with a Fe2O3 content less than 2.75 molar ratio the formation of orthoferrite is preferred.– A new Y2O3-type phase (Y2O'3) is the dominant component in systems with a low iron content.

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The effect of Zn2+ substitution on magnetic properties of maghemite nanoparticles, prepared by one-pot coprecipitation method at room temperature

Shatooti

Mozaffari

2019

J Mater Sci: Mater Electron

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Investigation of solid state reaction in 3Y2O3:5Fe2O3 by DTG(M), x-ray and IR spectroscopic methods

Cited by 7 publications

References 1 publication

Detailed crystallization study of co-precipitated Y1.47Gd1.53Fe5O12 and relevant magnetic properties

Detailed crystallization study of co-precipitated Y1.47Gd1.53Fe5O12 and relevant magnetic properties

Garnet forming solid state reactions in FeYCaZrO systems with different Y-Fe ratios

The effect of Zn2+ substitution on magnetic properties of maghemite nanoparticles, prepared by one-pot coprecipitation method at room temperature

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