Characterisation of bismuth-doped yttrium iron garnet layers prepared by sol–gel process

Rehspringer, Jean‐Luc; Buršík, J.; Nižňanský, Daniel; Klarikova, A.

doi:10.1016/s0304-8853(99)00749-0

Cited by 71 publications

(23 citation statements)

References 4 publications

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“…Multiferroics is defined as materials which combine at least two "ferroic" properties, such as ferromagnetic order (spontaneous magnetic polarization that can be reversed by a magnetic field), ferroelectricity (e.g., spontaneous electric polarization that can be switched by an applied electric field), and ferroelasticity (change in electric polarization accompanied by a change in shape) [1,2]. Multiferroic compounds are promising candidates for designing emerging electronic devices like multiple-state memories, magnetic data-storage media, actuators, transducers, sensors, and spintronic devices for different technological applications [3,4]. Bismuth ferrite, BiFeO 3 (BFO) is the most widely studied compound of the family, since it exhibits multiferroicity at room temperature, with a coexistence of ferroelectricity and anti-ferromagnetism up to its Neel temperature of T N ≈ 643 K [5].…”

Section: Introductionmentioning

confidence: 99%

Tailoring of electrical properties of BiFeO3 by praseodymium

et al. 2013

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Abstract:The polycrystalline samples of Bi 1x Pr x FeO 3 (x = 0 and 0.1) were prepared by a solid-state reaction technique. Preliminary X-ray structural analysis has confirmed the formation of a single-phase compound. Studies of dielectric and impedance spectroscopy of the materials, carried out in wide frequency (1 kHz-1 MHz) and temperature (25-400 ℃ ) ranges, have provided many interesting results including significant decrement in tangent loss, structural stability, obeying Jonscher's universal power law, etc.

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Section: Introductionmentioning

confidence: 99%

Tailoring of electrical properties of BiFeO3 by praseodymium

et al. 2013

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“…Both samples were then crushed into fine powder. This is important to facilitate the solid state reaction in the final sintering process [13,14].…”

Section: Methodsmentioning

confidence: 99%

“…Samples with particle size ranging from 45nm to 450nm were obtained using a sol gel technique [12]. This technique involves a set of chemical reactions which irreversibly convert a homogeneous solution of molecular reactant precursors (a sol) into an infinite molecular weight three-dimensional polymer (a gel) forming an elastic solid filling the same volume of solution [13,14]. Typically this involves a hydrolysis reaction followed by polymerization.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Single Crystals Y3Fe5O12 and Bi3Fe5O12 Prepared via Sol Gel Technique

Yahya

Kozioł

Mansor

2009

DDF

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Abstract. Magnetic properties of nano-crystalline yttrium iron garnet, Y 3 Fe 5 O 12 and bismuth iron garnet, Bi 3 Fe 5 O 12 were studied. The samples were synthesized by using sol gel route. The gel were prepared using nitrates of yttrium and iron for the yttium iron garnet (YIG) and nitrates of bismuth and iron for the bismuth iron garnet (BIG). The raw materials were mixed and dissolved in citric acid and were stirred for 3 months in room temperature until the gel was observed. The X-ray diffraction pattern reveals the cubic structure of YIG and BIG samples at 700 0 C and 500 0 C respectively. From the M-H diagrams it was found that the YIG and BIG samples have saturation magnetization, Ms of 27.2 Gs with rectangular hysteresis loop and 24.4 Gs with S hysteresis loop, respectively. It is evident from the FESEM micrographs that the rectangular loop shape (YIG) arises from the homogeneous and rounded microstructure as compared to the inhomogenous and random orientation microstructure (BIG) of the samples. From the Electron diffraction done on Transmission Electron Microscope, both of the samples were shown to be single crystals. IntroductionMagnetic garnet, namely, yttrium iron garnet (Y 3 Fe 5 O 12 ) and bismuth iron garnet (Bi 3 Fe 5 O 12 ) that belongs to a group of magnetic oxides, is an attractive material for magneto-optical devices. They also have important applications within microwave frequencies, namely, optical isolators, oscillators, circulators and others, due to their large Faraday rotation and high saturation magnetization [1,2]. For these reasons, there are ongoing interests in investigating the chemical, physical and magnetic properties of these garnet materials. Extensive studies have been carried out on the synthesis of YIG nano-particles by coprecipitation technique. Due to the novel processing method, these oxides possess unique magnetic, magneto optical, thermal, electrical and mechanical properties such as excellent creep and radiation damage resistance, high thermal conductivity, high electrical resistivity, controllable saturation magnetization, moderate thermal expansion coefficient, energy transfer efficiency and narrow line width in ferromagnetic resonance [3]. Recently, YIG nanocrystals that were dispersed on glass have been investigated for high density magnetic or magneto-optical information storage [4].

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“…Non conventional (chemical) methods have been found out by many researchers for the preparations of soft ferrite with garnet structure. These methods have advantages over conventional methods were reported by [10][11][12]. Chemical methods were investigated much better due to their large surface area of nanoparticles relative to low sintering temperature with good homogeneity and high chemical purity etc.…”

Section: Introductionmentioning

confidence: 99%

New EM Transmitter with Y3Fe5O12 Based Magnetic Feeders Potentially Used for Seabed Logging Application

Akhtar

Yahya

Nasir

2013

AMR

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Abstract. Sea bed logging (SBL) is a new technique for detection of deep target hydrocarbon reservoir. Powerful electromagnetic (EM) transmitter is required for the transmission of EM signal underneath the seabed. New aluminum transmitter with yttrium iron garnet (Y 3 Fe 5 O 12 ) based magnetic feeders was used in a scale tank to increase the magnitude of the magnetic field. Yttrium iron garnet samples were prepared using self combustion technique at different sintering temperatures of 750°C, 950°C and 1150°C. Characterizations of Y 3 Fe 5 O 12 samples were done by using XRD, RAMAN, FESEM and Impedence network analyser. X-ray diffraction results revealed that yttrium iron garnet phase with good crystallinity appeared at sintering temperature of 1150°C. Nanoparticles size ranging from 60 to 110 nm was investigated. Raman results also confirmed garnet structure of yttrium iron garnet at sintering temperature of 1150°C. Field emission scanning electron microscopy (FESEM)

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Characterisation of bismuth-doped yttrium iron garnet layers prepared by sol–gel process

Cited by 71 publications

References 4 publications

Tailoring of electrical properties of BiFeO3 by praseodymium

Tailoring of electrical properties of BiFeO3 by praseodymium

Synthesis and Characterization of Single Crystals Y<sub>3</sub>Fe<sub>5</sub>O<sub>12</sub> and Bi<sub>3</sub>Fe<sub>5</sub>O<sub>12</sub> Prepared via Sol Gel Technique

New EM Transmitter with Y<sub>3</sub>Fe<sub>5</sub>O<sub>12</sub> Based Magnetic Feeders Potentially Used for Seabed Logging Application

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