Structural, optical and vibrational properties of Cr2O3 with
Abstract. Chromium oxide (Cr 2 O 3) thin films have been synthesized on glass substrates by the spray pyrolysis technique. The structural, morphological and …
Origin of Magnetoelectric Effect in Cr2O3 | Semantic Scholar
Origin of Magnetoelectric Effect in Cr2O3. M. Date, J. Kanamori, M. Tachiki. Published 5 December 1961. Physics. Journal of the Physical Society of Japan. View via Publisher. …
Light-induced electronic polarization in antiferromagnetic …
Here we show that when inversion symmetry is broken by the antiferromagnetic order in Cr 2 O 3, transmitting a linearly polarized light pulse through the crystal gives rise to an in-plane...
Mass balance and results for the magnetic separation
The low-grade siliceous chromite ore from Ghutrigaon, Odisha, India, containing ~ 16% Cr2O3, with Cr/Fe ratio of 1.97 and ~ 55% of SiO2, does not find any use in metallurgical industry and hence ...
Effect of Cr2O3 addition on the oxidation induration …
The Cr2O3 addition marginally affected the phase composition but greatly affected the microstructural changes of the HVTMPs. ... T.C. Sun, Y.W. Ma, C.Y. Xu, and H.F. Yang, Effects of embedding direct reduction followed by magnetic separation on recovering titanium and iron of beach titanomagnetite concentrate, J. Iron Steel Res. …
[PDF] Mineralogical characterisation and separation studies …
DOI: 10.37190/ppmp/119016 Corpus ID: 216273903; Mineralogical characterisation and separation studies on the recovery of Cr2O3 in the high carbon ferrochrome slag @article{Chang2020MineralogicalCA, title={Mineralogical characterisation and separation studies on the recovery of Cr2O3 in the high carbon ferrochrome slag}, …
Magnetic Structure of Cr2O3 | Journal of Applied Physics
Pratt and Bailey have recently explained the optical and anomalous magnetic properties of Cr 2 O 3 by means of a model consisting of the basic Cr 2 O 3 antiferromagnetic …
Mineralogical characterisation and separation studies …
The magnetic separation tests were conducted using two different samples, which have -74 µm particles contents of 83.96% and 95.73%, respectively, to determine the optimal separation intensity ...
A theoretical investigation of α-Fe2O3–Cr2O3 solid solutions
Murakami et al.21 have observed the separation of 1 : 1 mixtures into Fe2O3-rich and Cr2O3-rich phases, when prepared by heating for 1 h at any temperature below 1213 K. For example, at 873 K the coexistent phases obtained by these authors exhibited compositions of 20 and 65 mol% Cr2O3.
Electromagnetic-wave absorption property of Cr2O3–TiO2 …
The electromagnetic parameter and microwave absorption property of CrTiO ceramics coating are investigated in the frequency range of 8.2 GHz–12.4 GHz. The …
Electronic, magnetic and crystal structure of Cr2O3 by …
On the structural, electronic and magnetic properties of spinel. F. F. Fava I. Baraille A. Lichanot C. Larrieu R. Dovesi. Physics, Materials Science. 1997. The structural, electronic and magnetic properties of spinel are investigated using the periodic ab initio Hartree - Fock program CRYSTAL. The geometry is fully optimized and the bulk ...
Electromagnetic Separation Of Cr2O3
metal Magnetic separation of FeOCr2O3 (chromite If both $ce{FeO}$ and $ce{Cr2O3}$ are antiferromagnetic, how can we separate them using magnetic separation ... Electromagnetic Separation Of Cr2O3 T21:09:28+00:00 Who we are > Products > Cases > Solutions > Contact Us > Solutions. Copper ore beneficiation plant;
Preparation and characterization of amorphous Cr2O3 …
The results of the magnetic property measurement showed that the Verwey transition and blocking temperatures of the produced Cr2O3 nanoparticles were 16 K and 66 K, respectively, and the ...
(PDF) APPLICATION OF ELECTROSTATIC AND ELECTROMAGNETIC SEPARATION …
This separator is designed for dry separation of weakly magnetic ores and materials into magnetic and non-magnetic fractions. To determine the components concentration in the original ore and in the resulting fractions, an ELAN 9000 mass spectrometer [19] with an ion source in the form of an inductively coupled argon plasma (ICP-MS) was used.
Electromagnetic-wave absorption property of Cr2O3–TiO2 …
Electromagnetic-wave absorption property of Cr 2 O 3 –TiO 2 coating with frequency selective surface. Author links open overlay panel Zhaoning ... fabricated and measured a Cr2O3-TiO2 radar absorbing coating (RAC) with FSS, indicating the EM absorption property was improved through the additional FSS. In our previous work, a …
Mineralogical characterisation and separation studies …
The low field intensity magnetic separation using 83.96% and 95.73% content of -74 µm fractions were performed, and the results are shown in Fig. 5. For 83.96% content of -74 µm fraction, with the increase of magnetic intensity, the recovery of Cr 2O 3 increased gradually, leading to a gradual decrease
(PDF) PRODUCTION OF CHROMITE CONCENTRATE FROM MAGNETIC …
Gravity separation is traditionally employed depending on the liberation particle size in order to obtain a saleable chromite concentrate with at least Cr2O3 content of 44% and Cr/Fe ratio of 2.20.
The effect of SiO2 and Cr2O3 additions on the
All specimens revealed glass in-glass phase separation, which in the presence of Cr2O3 was more extensive and on a much finer scale. The latter specimens, in the form of pressed glass frits heat ...
Structural, Optical and Magnetic Properties of Fe Doped Cr2O3 …
These nanoparticles have been studied for Fe induced structural, optical, magnetic and electrical behavior. X-ray diffraction pattern of pristine Cr2O3 revealed the formation of rhombohedral type ...
Magnetoelectric Cr2O3 and relativity theory | The European …
Relativity theory is useful for understanding the phenomenology of the magnetoelectric effect of the antiferromagnet chromium sesquioxide Cr 2 O 3 in two …
Flexomagnetism and vertically graded Néel temperature of
Flexomagnetism refers to the modification of the magnetic properties of a material due to inhomogeneous strain, and offers a promising pathway to the control and manipulation of magnetism ...
Electromagnetic-wave absorption property of Cr2O3–TiO2 …
1. Introduction. With the wide application of the antenna in radar detecting techniques and wireless communication technology, electromagnetic pollution and radiation problems are increasing in people's daily life, such as the increase of giga hertz (GHz) electronic devices, Wi-MAX technology, mobile phone communication, and the …
Innovative Methodology for Comprehensive Utilization of Spent MgO-Cr2O3
Spent MgO-Cr2O3 bricks contain various heavy metals and are considered as a hazardous waste. In order to utilize the waste, a novel process to recover the copper from the spent bricks by flotation was developed. The mineralogical characteristics of the bricks, the mechanisms of metal penetration, and the effects of grinding time, emulsified kerosene …
Electronic and magnetic properties of Ti2O3, Cr2O3, and …
Abstract. The electronic and magnetic properties of the transition metal sesqui-oxides Cr 2 O 3, Ti 2 O 3, and Fe 2 O 3 have been calculated using the …
Electronic and magnetic properties of Ti2O3, Cr2O3, and …
The electronic and magnetic properties of the transition metal sesqui-oxides Cr 2 O 3, Ti 2 O 3, and Fe 2 O 3 have been calculated using the screened exchange (sX) hybrid density functional. This functional is found to give a band structure, bandgap, and magnetic moment in better agreement with experiment than the local density …
Magnetic Structure of Cr2O3 | Semantic Scholar
Pratt and Bailey have recently explained the optical and anomalous magnetic properties of Cr2O3 by means of a model consisting of the basic Cr2O3 antiferromagnetic structure with moments canted away from the c axis and forming some kind of spiral. Our neutron powder‐diffraction data confirm the original Brockhouse moment configuration but …
Magnetic Structure of Cr2O3 | Journal of Applied Physics
Tools. Pratt and Bailey have recently explained the optical and anomalous magnetic properties of Cr 2 O 3 by means of a model consisting of the basic Cr 2 O 3 antiferromagnetic structure with moments canted away from the c axis and forming some kind of spiral. Our neutron powder‐diffraction data confirm the original Brockhouse …
Table 5: Grades and ratios for chromite concentrate …
The magnetic separation technique with or without reduction roasting method was ... Magnetite decreases the Cr/Fe ratio and Cr2O3 grade of concentrate and it will be very hard to remove magnetite ...
In-situ intercalation polymerization synthesis and electromagnetic …
Based on in-situ intercalation polymerization of PANI, graphene/PANI/CuO ternary nanocomposites were synthesized by hydrothermal reaction at 160 °C followed by heat treatment at 280 °C. The morphology and electromagnetic wave absorption property of as-prepared products were investigated. Result shows that the physical exfoliation of …
Bulk-like dielectric and magnetic properties of sub 100 nm
One issue hindering electric field manipulation of magnetic order in thin film Cr 2 O 3 is the existence of twin domain boundaries that result from the growth on …
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