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Structural, Electrical and Mössbauer Effect Studies of 0.5Bi rm_{0.95}Dy_{0.05}FeO_3-0.5Pb(Fe_{0.5}Nb_{0.5})O_3 Multiferroics

100%
Stoch A., Kulawik J., Stoch P., Maurin J., Zachariasz P.
Acta Physica Polonica A
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2008
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vol. 114
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issue 6
1585-1590
EN
0.5Bi_{0.95}Dy_{0.05}FeO_3-0.5Pb(Fe_{0.5}Nb_{0.5})O_3 is a multiferroic material which exhibits ferroelectric and antiferromagnetic ordering. (The synthesis of such compounds is rather difficult.) In this paper the way of the synthesis of 0.5Bi_{0.95}Dy_{0.05}FeO_3-0.5Pb(Fe_{0.5}Nb_{0.5})O_3 is presented. The detailed X-ray and Mössbauer effect studies were done and crystal and hyperfine interaction parameters were obtained. To measure electrical properties of the compound the impedance spectroscopy measurements were performed. The obtained impedance spectra were fitted using a proposed equivalent electrical circuit and the results were discussed in the scope of the brick layer model without easy paths.
2
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Structural and Mössbauer Effect Studies of 0.5Bi_{0.95}Dy_{0.05}FeO_{3}-0.5Pb(Fe_{2/3}W_{1/3})O_{3} Multiferroic

100%
Stoch A., Zachariasz P., Stoch P., Kulawik J., Maurin J.
Acta Physica Polonica A
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2011
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vol. 119
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issue 1
59-61
EN
A polycrystalline ceramic of 0.5Bi_{0.95}Dy_{0.05}FeO_{3}-0.5Pb(Fe_{2/3}W_{1/3})O_{3} was synthesized from a solid-state reaction method. At room temperature material exhibits both magnetic and electric dipolar properties simultaneously. Detailed X-ray diffraction analysis and Mössbauer effect studies have been done to determine the crystallographic structure and magnetic properties of 0.5Bi_{0.95}Dy_{0.05}FeO_{3}-0.5Pb(Fe_{2/3}W_{1/3})O_{3}. T_{N} temperature was estimated at around 600 K.
3
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Structural and Mössbauer Effect Studies of 0.7Bi_{0.95}Dy_{0.05}FeO_3-0.3Pb(Fe_{0.5}Nb_{0.5})O_3 Multiferroic

100%
Stoch A., Kulawik J., Stoch P., Maurin J., Zachariasz P.
Acta Physica Polonica A
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2011
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vol. 119
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issue 1
56-58
EN
0.7Bi_{0.95}Dy_{0.05}FeO_{3}-0.3Pb(Fe_{0.5}Nb_{0.5})O_{3} is a multiferroic material which exhibits ferroelectric and antiferromagnetic ordering. In this paper the way of the synthesis of 0.7Bi_{0.95}Dy_{0.05}FeO_{3}-0.3Pb(Fe_{0.5}Nb_{0.5})O_{3} is presented. The detailed X-ray and Mössbauer effect studies were done and crystal and hyperfine interaction parameters were obtained.
4
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Magnetoelectric Properties of 0.3Bi_{0.95}Dy_{0.05}FeO_3-0.7Pb(Fe_{2/3}W_{1/3})O_3 Multiferroic

100%
Stoch A., Stoch P., Kulawik J., Zieliński P., Maurin J.
Acta Physica Polonica A
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2012
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vol. 121
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issue 1
128-130
EN
Pb-based complex perovskites with Fe^{3+} like Pb(Fe_{2/3}W_{1/3})O_3 were found to be interesting because of their unique properties such as relaxor and magnetoelectric behavior. Pb(Fe_{2/3}W_{1/3})O_3 is ferroelectric with ferroelectric Curie temperature T_{C} between 150 and 200 K and at the same time is antiferromagnetic with magnetic Néel temperature about 400 K. BiFeO_3 is a well known perovskite compound which exhibits ferroelectric (T_{C} = 1103 K) and antiferromagnetic (T_{N} = 643 K) ordering simultaneously. The polycrystalline sample of 0.3Bi_{0.95}Dy_{0.05}FeO_3-0.7Pb(Fe_{2/3}W_{1/3})O_3 were synthesized using standard sintering procedure. Magnetization vs. magnetic field (at 4.2 K) curves were measured. Magnetoelectric properties of the sample were obtained.
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