Specifics of pyrohydrolytic and solid-phase syntheses of solid solutions in the (MgGa2O4) x (MgFe2O4)1 − x system

Кецко, В. А.; Береснев, Э. Н.; Копьева, М. А.; Elesina, L. V.; Baranchikov, А. Е.; Stognii, A. I.; Труханов, А.В.; Кузнецов, Н. Т.

doi:10.1134/s0036023610030216

Cited by 94 publications

(26 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The unit cell parameter а is 0.835(3) nm at 25˚C. At 300˚C, this value is 0.837(2) nm [11]. These data show that an increase in temperature considerably increases the unit cell parameter а of the spinel lattice.…”

Section: Crystal Structurementioning

confidence: 60%

“…Polycrystalline Mg(Fe 0.8 Ga 0.2 ) 2 O 4+δ sample was prepared by pyrohydrolitic method [11] at 1300 K. To carry out the pyrohydrolytic reactions, we prepared solution containing citric acid and a mixture of magnesium, gallium, and iron nitrates. The composition of the initial compound was determined on the basis of thermogravimetry (an ULVAC SINKU-RICO TGD 7000 thermal analyzer).…”

Section: Methodsmentioning

confidence: 99%

“…Apparently, temperature elevation leads to complex disordering processes in the crystal lattice of Mg(Fe 0.8 Ga 0.2 ) 2 O 4+δ [10]. Data of X-ray diffraction show that this compound is single-phase and thermostable in temperature range until 590 K, which makes this compound perspective for semiconductor electronics (the temperature range of stability for the materials used for semiconducting electronics is from −50˚C till 150˚C [11]. The analysis of the X-ray diffraction patterns indicates that the sample is described well (χ 2 = 2.4) by an orthorhombic ( )…”

Section: Crystal Structurementioning

confidence: 99%

“…The X-ray powder diffraction patterns of the Mg(Fe 0.8 Ga 0.2 ) 2 O 4+δ sample recorded at 25˚C and 300˚C [11]. The unit cell parameter а is 0.835(3) nm at 25˚C.…”

Section: Crystal Structurementioning

confidence: 99%

See 3 more Smart Citations

Magnetic, Electrical and Magnetotransport Properties of Mg(Fe0.8Ga0.2)2O4 δ Obtained by Pyrohtdrolitic Method

Труханов¹,

Труханов²,

Smirnov³

et al. 2015

OALib

Self Cite

View full text Add to dashboard Cite

The magnetic, electrical and magnetotransport properties of spinel-type Mg(Fe0.8Ga0.2)2O4+δ ceramic ferrites have been investigated. The results of the investigations temperature and field dependences of magnetization and resistivity are presented and analyzed. The data of neutron scattering were found to be in good agreement with the Neel model of ferrimagnetism. This compound is magnetomonophase ferrimagnetic in the wide range of temperatures, and shows transition in paramagnet at high temperature (~490 K). Mg(Fe0.8Ga0.2)2O4+δ is characterized by maximal value of magnetization (28 emu/g) in the range of Mg(Fe1−xGax)2O4+δ solid solutions. A negative magnetoresistance (MR) effect has been observed in Mg(Fe0.8Ga0.2)2O4+δ ferrite spinel. It has been determined that coefficient of the negative MR increased from 0.23% (at room temperature) to 7.28% (at 220 K). It can be explained with the help of the spin-dependent scattering on magnetic inhomogeneity of granular boundary.

show abstract

Section: Crystal Structurementioning

confidence: 60%

Section: Methodsmentioning

confidence: 99%

Section: Crystal Structurementioning

confidence: 99%

“…The X-ray powder diffraction patterns of the Mg(Fe 0.8 Ga 0.2 ) 2 O 4+δ sample recorded at 25˚C and 300˚C [11]. The unit cell parameter а is 0.835(3) nm at 25˚C.…”

Section: Crystal Structurementioning

confidence: 99%

See 2 more Smart Citations

Magnetic, Electrical and Magnetotransport Properties of Mg(Fe0.8Ga0.2)2O4 δ Obtained by Pyrohtdrolitic Method

Труханов¹,

Труханов²,

Smirnov³

et al. 2015

OALib

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recently, it was reported that the filling with nanoparticles was an effective method to reduce the sedimentation of larger particles in MR fluids [12,13,14,15,16,17,18,19,20]. Leong et al [21] prepared bidisperse magnetic particles (BMP) composed of γ -Fe 2 O 3 nanoparticles with an average size of 9 nm and carbonyl iron (CI) particles to investigate the rheological properties and sedimentation rate of the MR fluids.…”

Section: Introductionmentioning

confidence: 99%

Bidisperse Magnetic Particles Coated with Gelatin and Graphite Oxide: Magnetorheology, Dispersion Stability, and the Nanoparticle-Enhancing Effect

Yao

Zhao

et al. 2018

Nanomaterials

View full text Add to dashboard Cite

The magnetorheology and dispersion stability of bidisperse magnetic particles (BMP)-based magnetorheological (MR) fluids were improved by applying a novel functional coating composed of gelatin and graphite oxide (GO) to the surfaces of the micron-sized carbonyl iron (CI) and nanoparticles Fe3O4. Gelatin acted as a grafting agent to reduce the aggregation and sedimentation of CI particles and prevent nanoparticles Fe3O4 from oxidation. In addition, a dense GO network on the surface of gelatin-coated BMP was synthesized by self-assembly to possess a better MR performance and redispersibility. The rheological properties of MR fluids containing dual-coated BMP were measured by a rotational rheometer under the presence of magnetic field and their dispersion stability was examined through sedimentation tests. The results showed that CI@Fe3O4@Gelatin@GO (CI@Fe3O4@G@GO) particles possessed enhanced MR properties and dispersion stability. In addition, the nanoparticle-enhancing effects on the dispersion stability of BMP-based MR fluids were investigated using Monte Carlo simulations.

show abstract

Temperature-dependent physicochemical properties of magnesium ferrites (MgFe2O4)

et al. 2018

View full text Add to dashboard Cite

Specifics of pyrohydrolytic and solid-phase syntheses of solid solutions in the (MgGa2O4) x (MgFe2O4)1 − x system

Cited by 94 publications

References 4 publications

Magnetic, Electrical and Magnetotransport Properties of Mg(Fe0.8Ga0.2)2O4 δ Obtained by Pyrohtdrolitic Method

Magnetic, Electrical and Magnetotransport Properties of Mg(Fe0.8Ga0.2)2O4 δ Obtained by Pyrohtdrolitic Method

Bidisperse Magnetic Particles Coated with Gelatin and Graphite Oxide: Magnetorheology, Dispersion Stability, and the Nanoparticle-Enhancing Effect

Temperature-dependent physicochemical properties of magnesium ferrites (MgFe2O4)

Contact Info

Product

Resources

About