The magnetic properties of polycrystalline Bi1−xSrxFeO3 ceramics

Wang, L.Y.; Wang, D.H.; Huang, Haihong; Han, Zhida; Cao, Qiong; B, Gu; Du, Youwei

doi:10.1016/j.jallcom.2008.01.095

Cited by 75 publications

(34 citation statements)

References 26 publications

(45 reference statements)

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“…However, the diffraction peaks marked by ♦ indicate the formation of the minor impurity phase Bi 2 Fe 4 O 9 (∼3%) along with the major BFO phase. This phase was reported to form during the synthesis of BFO [2,3,9,10,12,16,21], and could not be removed even by longer calcination times which could also lead to more volatilization of Bi 2 O 3 .…”

Section: Resultsmentioning

confidence: 99%

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X‐ray diffraction and magnetization studies of BiFeO₃ multiferroic compounds substituted by Sm³⁺, Gd³⁺, Ca²⁺

Al-Haj¹

2009

Cryst. Res. Technol.

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FeO 3 were prepared by the conventional ceramic method and were characterized by X-ray diffraction, vibrating sample magnetometry, and differential scanning calorimetry. The compounds were found to have the rhombohedral perovskite-like structure, accompanied by a small residual Bi 2 Fe 4 O 9 impurity phase. Magnetic hysteresis loops with enhanced remnant magnetization and coercive field were obtained for the Gd-containing compounds. The improvement of magnetic behavior of the Gd-containing compounds is thought to arise mainly from the partial suppression of the spiral spin structure and the stronger interaction between magnetic ions. The magnetic transition temperatures of the compounds were found to be in the range 300-310 °C.

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Section: Resultsmentioning

confidence: 99%

“…In fact, this explanation is ruled out because the impurity phase is paramagnetic at room temperature [16]. [21] ceramics.…”

Section: +mentioning

confidence: 99%

X‐ray diffraction and magnetization studies of BiFeO₃ multiferroic compounds substituted by Sm³⁺, Gd³⁺, Ca²⁺

Al-Haj¹

2009

Cryst. Res. Technol.

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“…Impurity phases of Bi 2 Fe 4 O 9 are observed for x = 0 and with the addition of Ba the impurity peaks are vanished. Because of the kinetics of formation, a mixture of BiFeO 3 as a major phase along with other impurity phases is always obtained during synthesis [12,14]. When x = 0.1,0.2,0.3 single phase rhombohedral distorted perovskite structure in the R3c space group with no impurity peak is observed.…”

Section: Methodsmentioning

confidence: 99%

“…Therefore this material becomes unsuitable for applications. In order to solve this problem, there are several reports on the fabrication of (a) a single-phase BiFeO 3 compound [7,8], (b) a solid solution of BiFeO 3 with other ABO 3 perovskite materials, such as BaTiO 3 or PbZrTiO 3 [9,10], and (c) some doped BiFeO 3 compounds [11][12][13][14] in which ferroelectric hysteresis loops together with magnetism can be observed at room temperature. In the present work we report the effect of Ba 2+ ion substitution on the structural, dielectric, magnetic and ferroelectric properties of BiFeO 3 compound at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ba ions substitution on multiferroic properties of BiFeO₃ perovskite

Gautam¹,

Rangra

2010

Cryst. Res. Technol.

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Dielectric, magnetic and ferroelectric properties of Bi1‐xBaxFeO3(x = 0.1, 0.2 and 0.3) synthesized by solid state reaction method are reported. X‐ray diffraction pattern showed that Bi1‐xBaxFeO3was single phase. Ba substitution has led to a decrease in grain size and hence an increase in the electrical resistivity. The variation of dielectric constant and loss has been studied over a frequency range of 1 kHz – 2 MHz at room temperature. Ba doping leads to effective suppression of the spiral spin structure of BiFeO3, resulting in the appearance of net magnetization. Improved multiferroic properties of Bi0.8Ba0.2FeO3 ceramic with remnant magnetization and polarization 0.093 emu/g and 0.808 µC/cm2, respectively, were obtained. The evidence of ferromagnetism and ferroelectric hysteresis loops in Bi1‐xBaxFeO3system at room temperature makes it a good candidate for potential applications. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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“…Therefore, several attempts have been made in the last decade to solve these problems by doping with various ions at Bi/Fe-sites [11,12]. Although a few reports on the enhanced dielectric and magnetic properties of some rare earth-substituted BFO are available [13,14], no comprehensive study on the influence of various rare earth ions is available. In view of this, an effort has been made to investigate the influence of rare earth doping on ferroelectric and ferromagnetic behaviours of bismuth ferrite, and the results of such an investigation are presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

Structural, Magnetic and Dielectric Properties of Bi0.9Re0.1FeO3(Re = La, Sm, Gd and Y)

Zhu

Kumar

Zhong

et al. 2015

J Supercond Nov Magn

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With a view to understand the influence of rare earth ion doping on the structural, magnetic and dielectric properties of bismuth ferrite, a series of samples were prepared by the solidstate reaction method. After characterizing the samples with XRD and SEM studies, the magnetic and dielectric measurements were carried out. It is interesting to note that the two impurity phases, viz., orthorhombic Bi 2 Fe 4 O 9 and cubic Bi 25 FeO 40 observed in undoped bismuth ferrite are found to vanish with rare earth doping. Further, the remnant magnetization (M r ) values are found to increase with increasing ionic radii of dopant rare earth ion. Interestingly, among all the samples, La doped BiFeO 3 sample is exhibiting negative magnetization at low temperatures. The dielectric constant is found to exhibit two transitions above room temperature. Efforts have been made to explain the observed structural, magnetic and dielectric behaviours of the materials.

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The magnetic properties of polycrystalline Bi1−xSrxFeO3 ceramics

Cited by 75 publications

References 26 publications

X‐ray diffraction and magnetization studies of BiFeO₃ multiferroic compounds substituted by Sm³⁺, Gd³⁺, Ca²⁺

X‐ray diffraction and magnetization studies of BiFeO₃ multiferroic compounds substituted by Sm³⁺, Gd³⁺, Ca²⁺

Effect of Ba ions substitution on multiferroic properties of BiFeO₃ perovskite

Structural, Magnetic and Dielectric Properties of Bi0.9Re0.1FeO3(Re = La, Sm, Gd and Y)

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The magnetic properties of polycrystalline Bi1−xSrxFeO3 ceramics

Cited by 75 publications

References 26 publications

X‐ray diffraction and magnetization studies of BiFeO3 multiferroic compounds substituted by Sm3+, Gd3+, Ca2+

X‐ray diffraction and magnetization studies of BiFeO3 multiferroic compounds substituted by Sm3+, Gd3+, Ca2+

Effect of Ba ions substitution on multiferroic properties of BiFeO3 perovskite

Structural, Magnetic and Dielectric Properties of Bi0.9Re0.1FeO3(Re = La, Sm, Gd and Y)

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X‐ray diffraction and magnetization studies of BiFeO₃ multiferroic compounds substituted by Sm³⁺, Gd³⁺, Ca²⁺

X‐ray diffraction and magnetization studies of BiFeO₃ multiferroic compounds substituted by Sm³⁺, Gd³⁺, Ca²⁺

Effect of Ba ions substitution on multiferroic properties of BiFeO₃ perovskite