Structural, morphological and magnetic properties of NiFe2O4 nano-particles

Alarifi, Abdullah; Deraz, N.M.; Shaban, Seham A.

doi:10.1016/j.jallcom.2009.06.192

Cited by 136 publications

(64 citation statements)

References 41 publications

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“…Special attention is paid to various applications of combustion synthesized nanosized products [22,23]. We discuss a facile approach to control the size and the magnetic properties of different ferrite nanoparticles by combustion route [24][25][26]. Our experimental findings unambiguously confirm that the change in the fuel content during the combustion process has a significant influence on the surface, morphological, magnetic properties dependent particle size.…”

Section: Introductionsupporting

confidence: 55%

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Glycine-assisted fabrication of nanocrystalline cobalt ferrite system

Deraz

2010

Journal of Analytical and Applied Pyrolysis

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Section: Introductionsupporting

confidence: 55%

“…The induced decrease in the density due to the presence of glycine as fuel or a mixture of this fuel and ammonium nitrate could be ascribed to the reduction of oxygen vacancies which play a predominant role in accelerating densification i.e. the decrease in oxygen ion diffusion would retard the densification [24][25][26].…”

Section: Discussionmentioning

confidence: 99%

Glycine-assisted fabrication of nanocrystalline cobalt ferrite system

Deraz

2010

Journal of Analytical and Applied Pyrolysis

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“…Bunlardan ilki 620-550 cm -1 aralığında gözlenen ve tetrahedral yapı içerisinde metal-oksijen etkileşimini gösteren geniş bant, ikincisi ise 450-385 cm -1 aralığında görülen ve oktahedral yapıdaki metal-oksijen bağını gösteren geniş banttır. [17,18] [19]. Elde edilen ferritlerin kristal yapıları XRD analizleriyle de denetlenmiştir.…”

Section: Karakteri̇zasyonunclassified

SPİNEL FERRİT NANO-PARÇACIKLARININ HİDROTERMAL SENTEZ TEKNİĞİ KULLANILARAK HAZIRLANMASI ve MANYETİK ÖZELLİKLERİNİN ARAŞTIRILMASI

Vural¹,

Alphan²,

Köytepe³

et al. 2016

AUBTD-A

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ÖZETKobalt, nikel ve çinko ferrit nano parçacıkları hidrotermal sentez yöntemi kullanılarak sentezlenmiştir. Sentez koşullarının elde edilen spinel ferritlerin kristal yapısı, parçacık boyutu, örgü parametreleri, mikroyapı ve manyetik özellikler üzerine etkileri XIşını Kırınım Analizi (XRD), taramalı elektron mikroskopu (SEM), Enerji-dağılımlı X-ışınları spektroskopisi (EDX) ve Mapping yöntemleriyle belirlenmiştir. Hazırlanan ferritlerin parçacık boyutu 25-70 nm arasında değişmektedir. Ayrıca, nano parçacıkların manyetik özellikleri titreşimli örnek magnetometresi (VSM) kullanılarak araştırılmıştır. Manyetik özelliklerin sıcaklık ve Co, Ni ve Çinko iyon çeşidine şiddetle bağımlı olduğu gözlenmiştir. Bu örnekler yüksek yoğunluklu manyetik kayıtlama cihazlarında, yüksek kullanım potansiyeline sahiptir.Anahtar Kelimeler: Kontrollü morfoloji, spinel ferrit, nano parçacik, manyetik nano malzeme. PREPARATION OF SPINEL FERRITE NANOPARTICLES USING THE HYDROTHERMAL TECHNIQUE AND INVESTIGATION OF MAGNETIC PROPERTIES ABSTRACTCobalt, nickel and zinc ferrites nanoparticles have been synthesized using the hydrothermally technique. Effects of synthesis conditions on the crystal structure, crystallite size, lattice parameter, microstructure and magnetic properties of the produced spinel ferrites were investigated by X-ray diffraction analysis (XRD), scanning electron microscope (SEM), Energy-dispersive X-ray spectroscopy (EDX) and Mapping techniques. The mean crystallite size of the prepared ferrite was in the range of 25-70 nm. Furthermore, the magnetic properties of nanoparticles were investigated using a vibrating sample magnetometer (VSM). Strong temperature and Co, Ni, and Zn ions dependence of magnetic properties was observed. These samples are considered as promising materials for high density magnetic recording media.

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“…Copper ferrite is distinguished from other simple ferrites by an energy difference of about 0.1 eV between the normal and the inverse configuration [1]. Far infrared absorption spectroscopy has been used to study the occurrence of various absorption bands in the spectra and analyzed on the basis of different cations present on tetrahedral (A) and octahedral (B) sites of the spinel lattice [2][3][4][5][6][7]. Steirstadt et al [8] reported that the fraction of Cu 2+ ions occupying A sites can be changed from 0.11 to 0.18 by heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Structural and Morphological Studies of Copper-Doped Nickel Ferrite

Mahalakshmi

Manja

Nithiyanantham

2015

J Supercond Nov Magn

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Ferrite nanocrystals are an interesting material due to their rich physical properties. Here we add non-magnetic dopant Cu to nickel ferrite nanocrystals, Ni 1−x M x Fe 2 O 4 (x = 0.2, 0.4, and 0.6) M = Cu, and study how relevant properties of the samples are modified accordingly. The grain size and the surface morphology were studied by scanning electron microscopy (SEM).Basically, these doping cause a rearrangement of Fe +3 ions into the two preexisting octahedral and tetrahedral sites. In fact, this, we show, induces pertinent magnetic properties of the doped samples. In the case of Cu doping, the Jahn-Teller effect also emerges, which we identify through the Fourier transform infrared spectroscopy of the samples. Moreover, we show an increase in the lattice parameters of the doped samples, as well a superparamagnetic behavior for the doped samples, while the Jahn-Teller effect precludes a similar behavior in the CuFe 2 O 4 nanocrystals.

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Structural, morphological and magnetic properties of NiFe2O4 nano-particles

Cited by 136 publications

References 41 publications

Glycine-assisted fabrication of nanocrystalline cobalt ferrite system

Glycine-assisted fabrication of nanocrystalline cobalt ferrite system

SPİNEL FERRİT NANO-PARÇACIKLARININ HİDROTERMAL SENTEZ TEKNİĞİ KULLANILARAK HAZIRLANMASI ve MANYETİK ÖZELLİKLERİNİN ARAŞTIRILMASI

Structural and Morphological Studies of Copper-Doped Nickel Ferrite

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