The Impact of Cation Distribution on The Structural and Magnetic Properties of Nonstoichiometric Co0.5Ni0.5+xFe2-xO4 Nanoferrites

Abstract In this work, the impact of nonstoichiometric substitution of Fe3+ cations by Ni2+ ones on the structural and magnetic properties of Co0.5Ni0.5+xFe2-xO4 (0.0 ≤ x ≤ 0.4) nanoferrites synthesized by citric autocombustion method. The cubic phase purity for sintered samples were verified by XRD patterns and FTIR spectra. The crystallite size and microstrain were deduced using Williamson-Hall method. The estimated crystallite size ranges from 55 to 89 nm in agreement with TEM microimages. Hysteresis loops traced using VSM prevailed a regular reduction of saturation magnetization with Ni substitution. Relied on the experimental data of XRD, FTIR, and VSM, cation distribution has been suggested, according to which the nonstoichiometric substitution was compensated by the appearance of higher valance states of Fe, Ni, and Co cations. The suggested cation distribution successfully explained the recorded data of lattice parameter, crystallite size, IR frequencies, magnetization and coercivity.

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The Structural and Magnetic Properties of Gadolinium Doped CoFe2O4Nanoferrites

Journal of Nanomaterials ◽

10.1155/2015/294239 ◽

2015 ◽

Vol 2015 ◽

pp. 1-6 ◽

Cited By ~ 10

Author(s):

Qing Lin ◽

Jinpei Lin ◽

Yun He ◽

Ruijun Wang ◽

Jianghui Dong

Keyword(s):

Magnetic Properties ◽

Saturation Magnetization ◽

Crystallite Size ◽

Room Temperature ◽

Cobalt Ferrite ◽

Sol Gel ◽

Average Crystallite Size ◽

Lattice Parameter ◽

Cubic Phase ◽

Structural And Magnetic Properties

Gadolinium substituted cobalt ferrite CoGdxFe2−xO4(x= 0, 0.04, 0.08) powders have been prepared by a sol-gel autocombustion method. XRD results indicate the production of a single cubic phase of ferrites. The lattice parameter increases and the average crystallite size decreases with the substitution of Gd3+ions. SEM shows that the ferrite powers are nanoparticles. Room temperature Mössbauer spectra of CoGdxFe22−xO4are two normal Zeeman-split sextets, which display ferrimagnetic behavior. The saturation magnetization decreases and the coercivity increases by the Gd3+ions.

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Effect of Gd doping on Structural, Morphological and Magnetic Properties of Mn-Zn Soft Ferrites Nanoparticles

10.21203/rs.3.rs-500764/v1 ◽

2021 ◽

Author(s):

Anjali Shrivastava ◽

Ashwani Kumar Shrivastava

Keyword(s):

Magnetic Properties ◽

Crystallite Size ◽

Morphological Characteristics ◽

Lattice Parameter ◽

Nano Particles ◽

Sem Images ◽

Manganese Zinc ◽

Manganese Zinc Ferrite ◽

Xrd Patterns ◽

Co Precipitation

Abstract Co-precipitation technique was adopted to synthesize gadolinium doped manganese-zinc ferrite nano particles with varying concentration 0, 0.1, 0.2 and 0.3. XRD patterns authenticated the ferrite innovate in the as-prepared samples. The lattice parameter, crystallite size, lattice strain and x-ray density has been calculated. The crystallite size is comes bent on be around 5 nm. The FTIR spectra reveal that every one the functional groups are present within the material. SEM images are accustomed to indicate the morphological characteristics of the as-prepared samples. Magnetic properties show the decrease in saturation magnetization from 37.57emu/g to 30.15emu/g with reference to increase in gadolinium doping from 0.1 to 0.3.

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The impact of cation distribution on the structural and magnetic properties of nonstoichiometric Co0.5Ni0.5+xFe2−xO4 nanoferrites

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-021-05978-4 ◽

2021 ◽

Author(s):

Adel Maher Wahba ◽

Bahaa Eldeen M. Moharam ◽

Aya Fayez Mahmoud

Keyword(s):

Magnetic Properties ◽

Cation Distribution ◽

Structural And Magnetic Properties ◽

The Impact

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The impact of cobalt insertion on the structural and magnetic properties of nonstoichiometric ZnCo Fe1.7O4 (x >0.3) nanoferrites

Materials Science and Engineering B ◽

10.1016/j.mseb.2021.115151 ◽

2021 ◽

Vol 269 ◽

pp. 115151

Author(s):

Adel Maher Wahba ◽

Zein K. Heiba ◽

Mohamed Bakr Mohamed

Keyword(s):

Magnetic Properties ◽

Structural And Magnetic Properties ◽

The Impact

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Gamma irradiation induced damage creation on the cation distribution, structural and magnetic properties in Ni–Zn ferrite

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ◽

10.1016/j.nimb.2010.05.058 ◽

2010 ◽

Vol 268 (17-18) ◽

pp. 2706-2711 ◽

Cited By ~ 45

Author(s):

Asif Karim ◽

Sagar E. Shirsath ◽

S.J. Shukla ◽

K.M. Jadhav

Keyword(s):

Magnetic Properties ◽

Gamma Irradiation ◽

Cation Distribution ◽

Zn Ferrite ◽

Structural And Magnetic Properties

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Competition between the impact of cation distribution and crystallite size on properties of MnxFe3−xO4 nanoparticles synthesized at room temperature

Ceramics International ◽

10.1016/j.ceramint.2017.08.079 ◽

2017 ◽

Vol 43 (17) ◽

pp. 15381-15391 ◽

Cited By ~ 11

Author(s):

Nahid Modaresi ◽

Reza Afzalzadeh ◽

Bagher Aslibeiki ◽

Parviz Kameli

Keyword(s):

Crystallite Size ◽

Cation Distribution ◽

Room Temperature ◽

The Impact

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Synthesis of ZrO2–Y6WO12 solid solution powders by a polymerized complex method

Journal of Materials Research ◽

10.1557/jmr.1998.0130 ◽

1998 ◽

Vol 13 (4) ◽

pp. 939-943 ◽

Cited By ~ 10

Author(s):

Junfeng Ma ◽

Masahiro Yoshimura ◽

Masato Kakihana ◽

Masatomo Yashima

Keyword(s):

Solid Solution ◽

Crystallite Size ◽

Surface Area ◽

Solid Solutions ◽

Lattice Parameter ◽

Cubic Phase ◽

Complex Method ◽

Amorphous Precursor ◽

Fine Powders ◽

Polymerized Complex Method

A series of solid solutions (1 − x) ZrO2 · xY0.857 W0.143 O1.714 (1/7Y6WO12) of metastable cubic phase were synthesized at 800 °C through a polymerized complex method. Lattice parameter a0 of solid solutions varies linearly with Y0.857 W0.143 O1.714 content (x). Crystallization began to occur above 400 °C from amorphous precursor to yield at 800 °C fine powders of 6–10 nm and 19–40 m2/g for crystallite size and surface area, respectively.

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Crystal Structures and Magnetic Properties of Polyethylene Glycol (PEG-4000) Encapsulated Co0.5Ni0.5Fe2O4 Magnetic Nanoparticles

INDONESIAN JOURNAL OF APPLIED PHYSICS ◽

10.13057/ijap.v8i2.22108 ◽

2018 ◽

Vol 8 (2) ◽

pp. 75

Author(s):

Edi Suharyadi ◽

Lintang Griyanika ◽

Joko Utomo ◽

Ayu Kurnia Agustina ◽

Takeshi Kato ◽

...

Keyword(s):

Magnetic Nanoparticles ◽

Crystallite Size ◽

Spinel Ferrite ◽

Lattice Parameter ◽

X Ray ◽

Maximum Magnetization ◽

Peg 4000 ◽

Significant Difference ◽

Ray Density ◽

Xrd Patterns

Nanocrystalline mixed spinel ferrite of Co0.5Ni0.5Fe2O4 magnetic nanoparticles (MNPs) has been successfully synthesized by coprecipitation method and encapsulated by PEG-4000 with various concentrations. X-Ray Diffraction (XRD) patterns showed that nanoparticles contained Co0.5Ni0.5Fe2O4 spinel ferrite with crystallite size of 14.9 nm. After PEG-4000 encapsulation particles size decreased became 7.7 nm. Interaction Co0.5Ni0.5Fe2O4 nanoparticles with long chain PEG-4000 caused the crystal growth trap. Lattice parameter and X-Ray density have no significant difference after encapsulated PEG-4000. The coercivity (𝐻𝑐) of Co0.5Ni0.5Fe2O4 was 214 Oe. The 𝐻𝑐 decreased after PEG-4000 encapsulation became 127 Oe, which is due to the decrease of crystallite size. The maximum magnetization (Mmax) of Co0.5Ni0.5Fe2O4 was 12.0 emu/g, and decreased after PEG-4000 encapsulation to 11.7 emu/g, because PEG-4000 is paramagnetic. After the concentration of PEG-4000 increased, then the amount of paramagnetic material increase which lead maximum magnetization decrease.

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