The effect of Gd3+ and Cd2+ substitution on magnetization of copper ferrite

Kolekar, C. B.; Lipare, A. Y.; Ladgaonkar, B. P.; Vasambekar, P. N.; Vaingankar, A. S.

doi:10.1016/s0304-8853(01)00974-x

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…It has been established that secondary phase is formed when La 3+ is added for Fe 3+ [22]. Similar orthorhombic distortions in La 3+ substituted Mg-Cu [19] and Gd 3+ substituted Cu-Cd [23] ferrites have been reported. We have already reported the orthoferrite behavior of Y 3+ and Sm 3+ added Mg-Cd ferrite [5,24].…”

Section: Characterizationsupporting

confidence: 62%

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Synthesis, characterization and magnetic properties of La3+ added Mg–Cd ferrites prepared by oxalate co-precipitation method

Gadkari¹,

Shinde²,

Vasambekar³

2011

Journal of Alloys and Compounds

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Section: Characterizationsupporting

confidence: 62%

“…It is observed that the ionic radii and bonds length on A-site are smaller than that of B-site for all samples and increases with increase in cadmium content [5,23]. It is seen from The increase in bond length is associated with the increase in the lattice constant which is due to increase in Cd 2+ content.…”

Section: Characterizationmentioning

confidence: 75%

Synthesis, characterization and magnetic properties of La3+ added Mg–Cd ferrites prepared by oxalate co-precipitation method

Gadkari¹,

Shinde²,

Vasambekar³

2011

Journal of Alloys and Compounds

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“…Ferrites of similar composition differ in their physical and chemical properties depending on the distribution of cations, having different oxidation states, among the available tetrahedral and octahedral sites. Moreover, substitution of magnetic and non-magnetic cations in ferrite materials changes their magnetic and electrical properties [9,10]. The change in physical and chemical properties of ion substituted spinel ferrites arises from the ability of these compounds to distribute the cations amongst the available tetrahedral and octahedral sites [11].…”

Section: Introductionmentioning

confidence: 99%

Low-Temperature Synthesis of Nanocrystalline Mn0.2Ni0.8Fe2O4 by Oxalate Precursor Route

Hessien¹,

Zaki²,

Mohsen³

2013

AMPC

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Manganese nickel ferrite (Mn 0.2 Ni 0.8 Fe 2 O 4 ) powder was synthesized through oxalate precursor route. The effect of annealing temperature (400˚C -1100˚C) on the formation, crystalline size, morphology and magnetic properties was systematically studied. The resultant powders were investigated by thermal analyzer (TG-DTG-DSC), X-ray diffractometer (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometer (VSM). Based on thermal analysis results, the oxalate mixture decomposed thermally in multisteps weight loss up to about 680˚C. XRD indicated that Mn 0.2 Ni 0.8 Fe 2 O 4 formed at much lower annealing temperature (≤400˚C) but contained α-Fe 2 O 3 impurity. The hematite phase decreased by increasing the annealing temperature. The lattice parameters were increased with increasing annealing temperature up to 1000˚C. The average crystalline size increased by increasing the annealing temperature. Single well crystalline ferrite was obtained at 800˚C with crystallite size about 109 nm. The saturation magnetization of the ferrites powders continuously increased with the increase in annealing temperature. Maximum saturation magnetization 48.2 emu/g was achieved for the formed Mn 0.2 Ni 0.8 Fe 2 O 4 phase at annealing temperature 1100˚C.

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Microbial formation of lanthanide-substituted magnetites by Thermoanaerobacter sp. TOR-39

et al. 2007

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The potentially toxic effects of soluble lanthanide (L) ions, although microbially induced mineralization can facilitate the formation of tractable materials, has been one factor preventing the more widespread use of L-ions in biotechnology. Here, we propose a new mixed-L precursor method as compared to the traditional direct addition technique. L (Nd, Gd, Tb, Ho and Er)-substituted magnetites, L( y )Fe(3 - y )O(4) were microbially produced using L-mixed precursors, L( x )Fe(1 - x )OOH, where x = 0.01-0.2. By combining lanthanides into the akaganeite precursor phase, we were able to mitigate some of the toxicity, enabling the microbial formation of L-substituted magnetites using a metal reducing bacterium, Thermoanaerobacter sp. TOR-39. The employment of L-mixed precursors enabled the microbial formation of L-substituted magnetite, nominal composition up to L(0.06)Fe(2.94)O(4), with at least tenfold higher L-concentration than could be obtained when the lanthanides were added as soluble salts. This mixed-precursor method can be used to extend the application of microbially produced L-substituted magnetite, while also mitigating their toxicity.

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The effect of Gd3+ and Cd2+ substitution on magnetization of copper ferrite

Cited by 10 publications

References 7 publications

Synthesis, characterization and magnetic properties of La3+ added Mg–Cd ferrites prepared by oxalate co-precipitation method

Synthesis, characterization and magnetic properties of La3+ added Mg–Cd ferrites prepared by oxalate co-precipitation method

Low-Temperature Synthesis of Nanocrystalline Mn<sub>0.2</sub>Ni<sub>0.8</sub>Fe2O<sub>4</sub> by Oxalate Precursor Route

Microbial formation of lanthanide-substituted magnetites by Thermoanaerobacter sp. TOR-39

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The effect of Gd3+ and Cd2+ substitution on magnetization of copper ferrite

Cited by 10 publications

References 7 publications

Synthesis, characterization and magnetic properties of La3+ added Mg–Cd ferrites prepared by oxalate co-precipitation method

Synthesis, characterization and magnetic properties of La3+ added Mg–Cd ferrites prepared by oxalate co-precipitation method

Low-Temperature Synthesis of Nanocrystalline Mn&lt;sub&gt;0.2&lt;/sub&gt;Ni&lt;sub&gt;0.8&lt;/sub&gt;Fe2O&lt;sub&gt;4&lt;/sub&gt; by Oxalate Precursor Route

Microbial formation of lanthanide-substituted magnetites by Thermoanaerobacter sp. TOR-39

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Low-Temperature Synthesis of Nanocrystalline Mn<sub>0.2</sub>Ni<sub>0.8</sub>Fe2O<sub>4</sub> by Oxalate Precursor Route