Structural properties of ferric pseudobrookite Fe&lt;SUB align=right&gt;2Ti&lt;SUB align=right&gt;1O&lt;SUB align=right&gt;5 powder prepared by a new method

Aljuraide, N. I.; Mouśa, M. A.; Hessien, M.M.; Qhatani, Mohsen M.; Ashour, Amal Adnan; Wamocha, Humphrey Lusenaka; Hamdeh, Hussein H.; Ahmed, M. A.

doi:10.1504/ijnp.2011.038246

Cited by 8 publications

(3 citation statements)

References 7 publications

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“…The majority of modern approaches to synthesizing pseudobrookite-type composite materials are based on the formation of crystal phases using high-temperature processing (at more than 400°C) [18][19][20], as this allows to fix the structure generated during the synthesis stage and to develop magnetic and semiconductor properties due to transforming the amorphous phase into the crystal one. An increase in crystallinity promotes a sharp increase in photoactivity properties due to a visible-region shift of spectral activity for a material [21].…”

Section: Resultsmentioning

confidence: 99%

Low-temperature sol–gel synthesis of nanosized pseudobrookite crystals without heat treatment

Vinogradov

Gerasimova

et al. 2012

Journal of Alloys and Compounds

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Section: Resultsmentioning

confidence: 99%

Low-temperature sol–gel synthesis of nanosized pseudobrookite crystals without heat treatment

Vinogradov

Gerasimova

et al. 2012

Journal of Alloys and Compounds

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“…Further, the prepared composite particles were soft magnetic, and some of the iron metal particles were inlaid into titania, which led to superparamagnetic behaviour. Hessian and colleagues [29] synthesised ferrimagnetic pseudobrookite particles with unusual morphology of thin strings of joined particles using high temperatures starting from 900 • C. The synthesised material showed a weak ferromagnetic ordering and paramagnetic behaviour. Srinivas et al [23] and Raghavender et al [22] fabricated a soft ferromagnetic nanocrystalline FT through the co-precipitation technique and multistep process, respectively.…”

Section: Introductionmentioning

confidence: 99%

Study of the magnetic properties of Mn‐doped iron titanate nanoparticles fabricated using natural mineral

Senthil

Raman

Arunmetha

2021

Micro & Nano Letters

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In this study, iron titanate (FT) and manganese‐doped iron titanate (MFT) nanoparticles were synthesised from a natural mineral, ilmenite ore, using a simple and effective method. X‐ray diffraction analysis confirmed the reduction of crystallite size from 56 to 29 nm with an increase in Mn doping concentration from 0% to 2%. Doping of Mn transformed the agglomerated fine particles into nanosphere‐like morphology with dimensions less than 200 nm. Magnetization studies revealed that FT and MFT were hard ferrimagnetic materials, and beyond 0.8% Mn dopant concentration, reduction in magnetic saturation value of 1.46–1.41 emu g−1 was observed. Resistivity of FT decreased from ≈19 to ≈2 K Ω‐cm with doping Mn and tuning of such electrical property through doping concentration can lead to their application in fabricating spintronic devices. This work suggests a new pathway to synthesise magnetic–semiconducting nanostructures at large scale and in an environment friendly manner from ilmenite ore.

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“…Thus the application of Pseudobrookite Fe 2 TiO 5 material is very wide and makes this material is one of the multifunctional materials so the further understanding of this material is very interesting to study. Several methods have been developed to synthesize this compound is by using a hydrothermal method [11], ball-milled [9], solgel processes [8], solid state [12], and chemical vapor deposition [13]. However, one of the simplest methods is to use a solid state reaction method through mechanical milling.…”

Section: Introductionmentioning

confidence: 99%

CRYSTALLOGRAPHIC STRUCTURE AND MAGNETIC PROPERTIES OF PSEUDOBROOKITE Fe2-XNiXTiO5 SYSTEM (x = 0, 0.1, 0.2, 0.3, 0.5 and 1)

Sarwanto

Adi

2018

JUSAMI

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Crystallographic structure and magnetic properties of pseudobrookite Fe2-xNixTiO5 system (x = 0, 0.1, 0.2, 0.3, 0.5 and 1) have been performed through solid state reaction. Pseudobrookite Fe2-xNixTiO5 system was synthesized by mixing of Fe2O3, NiO, and TiO2 with stoichiometry composition using wet mill. The mixture was milled for 5 hours and sintered in the electric chamber furnace at 1000 oC in the air at atmosphere pressure for 5 hours. The refinement against of X-ray diffraction data shows that the sampless with composition of (x = 0) and (x = 0.1) have a single phase with Fe2TiO5 structure. However the samples with composition of (x > 0.1) consist of multiple phases, namely Fe2-xNixTiO5, FeTiO3, Fe2NiO4 and NiO. Particle morphologies of the composition x = 0 and x = 0.1 are homogenous and uniform on the sample surface with a polygonal particle shape and particle size varies. At room temperature, the sample with x=0 is paramagnetic and that with x=0.1 is ferromagnetic. Magnetic phase transformation of this study is the caused by the present of Ni substituted Fe in the system. Thus substitution Ni into Fe on the system pseudobrookite Fe2TiO5 only capable of 0.1 at.% without changing the crystal structure of the material. It means that there is an interaction between the magnetic spin Fe3+ on the 3d5 configurations and Ni2+ on the 3d3 configurations through the mechanism of double exchange. Double exchange mechanism is a magnetic type of exchange that appears between the ions Fe3+ and Ni2+ adjacent in different oxidation states.

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Structural properties of ferric pseudobrookite Fe<SUB align=right>2Ti<SUB align=right>1O<SUB align=right>5 powder prepared by a new method

Cited by 8 publications

References 7 publications

Low-temperature sol–gel synthesis of nanosized pseudobrookite crystals without heat treatment

Low-temperature sol–gel synthesis of nanosized pseudobrookite crystals without heat treatment

Study of the magnetic properties of Mn‐doped iron titanate nanoparticles fabricated using natural mineral

CRYSTALLOGRAPHIC STRUCTURE AND MAGNETIC PROPERTIES OF PSEUDOBROOKITE Fe2-XNiXTiO5 SYSTEM (x = 0, 0.1, 0.2, 0.3, 0.5 and 1)

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