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Ultrasound-assisted...
Ultrasound-assisted synthesis and magnetic investigations of Ni0.4Cu0.4Zn0.2GaxGdxFe2-2xO4 (0.00 <= x <= 0.04) nanosized spinel ferrites
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- Slimani, Y. (author)
- Imam Abdulrahman Bin Faisal Univ, Inst Res & Med Consultat IRMC, Dept Biophys, POB 1982, Dammam 31441, Saudi Arabia.
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- Almessiere, M. A. (author)
- Imam Abdulrahman Bin Faisal Univ, Inst Res & Med Consultat IRMC, Dept Biophys, POB 1982, Dammam 31441, Saudi Arabia.;Imam Abdulrahman Bin Faisal Univ, Coll Sci, Dept Phys, POB 1982, Dammam 31441, Saudi Arabia.
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- Korkmaz, A. Demir (author)
- Istanbul Medeniyet Univ, Dept Chem, TR-34700 Istanbul, Turkey.
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- Baykal, A. (author)
- Imam Abdulrahman Bin Faisal Univ, Inst Res & Med Consultat IRMC, Dept Nanomed Res, POB 1982, Dammam 31441, Saudi Arabia.
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- Manikandan, A. (author)
- Bharath Univ, Bharath Inst Higher Educ & Res BIHER, Dept Chem, Chennai 600073, Tamil Nadu, India.;Bharath Inst Higher Educ & Res BIHER, Ctr Catalysis & Renewable Energy, Chennai 600073, Tamil Nadu, India.
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- Gungunes, H. (author)
- Hitit Univ, Dept Phys, Cevre Yolu Bulvari, TR-19030 Corum, Turkey.
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- Toprak, Muhammet, 1973- (author)
- KTH,Biomedicinsk fysik och röntgenfysik
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Imam Abdulrahman Bin Faisal Univ, Inst Res & Med Consultat IRMC, Dept Biophys, POB 1982, Dammam 31441, Saudi Arabia Imam Abdulrahman Bin Faisal Univ, Inst Res & Med Consultat IRMC, Dept Biophys, POB 1982, Dammam 31441, Saudi Arabia.;Imam Abdulrahman Bin Faisal Univ, Coll Sci, Dept Phys, POB 1982, Dammam 31441, Saudi Arabia. (creator_code:org_t)
- 2022-06-18
- 2022
- English.
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In: Applied Physics A. - : Springer Nature. - 0947-8396 .- 1432-0630. ; 128:7
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- This study focused on the impact of Ga-Gd co-substitution on the structural, magnetic features and hyperfine interactions of nanosized NiCuZn spinel ferrites [Ni0.4Cu0.4Zn0.2GaxGdxFe2-2xO4 (0.00 <= x <= 0.04) NSFs] synthesized via sonochemical approach using ultrasonic irradiation. X-ray powder pattern (XRD) analyses confirmed cubic spinel structures of products. Crystallites and particle sizes of all samples are found to be between 9-14 nm and 18-22 nm, respectively. The NSF morphology and chemical composition were investigated by transmission and scanning electron microscope (TEM and SEM) along with energy-dispersive X-ray (EDX). The cation distribution of all ions was evaluated by Mossbauer spectroscopy. The high spin Fe3+ ions determined the isomer shift (I.S.) values. For lower rare-earth dopant ratios, we found that Gd3+ ions occupy B sites, while Ga3+ ions reside in A sites, and thereafter, some Ga3+ ions start to enter B sites. Magnetometry measurements were used to evaluate the effect of magnetic field (H) and temperature (T) on the magnetization of products. For each sample, both coercivity (H-c) and saturation magnetization (M-s) increase when the T decreases below ambient temperature. All substituted samples display M-s values higher than those of non-substituted ones; however, H-c values diminish for x content up to 0.02 and thereafter enlarge. Different magnetization measurements revealed superparamagnetic-to-ferromagnetic transition below the blocking temperature (T-B).
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Ga-Gd co-substitution
- Hyperfine interactions
- Spinel ferrites
- Mossbauer spectroscopy
- Magnetic properties
Publication and Content Type
- ref (subject category)
- art (subject category)
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