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1

The Positive Temperature Coefficient of Resistivity Effect in the Pb(Fe_{1/2}Nb_{1/2})O_{3} Ceramics Admixed with Lithium

100%

Bochenek D.

Acta Physica Polonica A

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2009

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vol. 116

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issue 3

268-270

EN

In the paper technological conditions were looked for to obtain the Pb(Fe_{1/2}Nb_{1/2})O_{3} (PFN) ceramics and the PFN ceramics with the lithium admixture with the highest electric conduction and conditions appropriate for the PTC-R effect formation. Measurements of dc electrical resistivity, dielectric permittivity and dielectric loss were made as functions of temperature from room temperature to 190°C, at 1 kHz. The best set of values of dielectric loss and dielectric constant, from the ferroelectricity point of view, were obtained when the precursor with orthorhombic structure was employed. By creating appropriate technological conditions in the PFN ceramics the PTC-R effect can occur above the Curie temperature. Their electric properties are determined by presence of a basic phase of the potential barrier on the grain boundaries.

2

Dielectric relaxation of manganese modified Bi6Fe2Ti3O18 aurivillius type ceramics

64%

Bartkowska J. A., Bochenek D.

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issue 1

3

The Pb(Fe_{1/2}Nb_{1/2})O_3 Ferroelectromagnetic Ceramics in a View of Possibilities to be Used for Electric Transducers

64%

Bochenek D., Zachariasz R.

|

2008

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vol. 114

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issue 6A

A-15-A-20

EN

The PbFe_{1/2}Nb_{1/2}O_3 (PFN) ceramics can be obtained by a lot of ways. There are a lot of methods and techniques to synthesize the PFN powder such as: reactions in the solid phase by one-stage or two-stage synthesizing method (the columbite method), molten salt synthesis, sol-gel, co-precipitation method and sintering of compacts from a loose mixture of powders. Each of them requires accuracy and precision to conduct a technological process, aiming at obtaining a product with the optimum parameters. In the work PFN specimens were obtained by one-stage synthesis methods using two different powder synthesizing techniques: by calcining (sintering of a loose mixture of the PFN powder) and as a result of sintering of pressed compacts from the PFN powder mixture at high temperature (pressing). The obtained specimens were subjected to X-ray and micro-structural examinations and tests of internal friction and dielectric properties. The tests showed that the ceramics obtained by the powder calcining method has better applied properties.

4

Technology and Properties of Ferroelectromagnetic Lead–Free BFN–Ferrite Composites

64%

Bochenek D., Niemiec P.

Archives of Metallurgy and Materials

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2013

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issue 4

5

An Influence of the Synthesis Conditions οn the PFN Ceramics Properties

64%

Bochenek D., Surowiak Z.

Acta Physica Polonica A

|

2009

|

vol. 116

|

issue 3

271-273

EN

In the work tests of the influence of the technological conditions on the basic applied properties of the Pb(Fe_{0.5}Nb_{0.5})O_3 ceramics were carried out. The Pb(Fe_{0.5}Nb_{0.5})O_3 specimens were obtained by a two-stage method of synthesizing (the niobite method), a technique of the powder mixture calcinations, changing a temperature range of the iron-niobate (FeNbO_{4}), whereas compacting was conducted by free sintering.

6

Electrophysical Properties of the Multiferroic BFN-Ferrite Composites Obtained by Spark Plasma Sintering and Classical Technology

55%

Bochenek D., Niemiec P., Brzezińska D., Bochenek D., Niemiec P., Brzezińska D.

Archives of Metallurgy and Materials

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2020

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vol. 65

|

52%

Bochenek D., Zachariasz R., Ilczuk J., Dudek J.

Acta Physica Polonica A

|

2009

|

vol. 116

|

issue 3

274-276

EN

In this work an attempt was made to obtain three compositions of the solid solution (1-x)Pb(Fe_{0.5}Nb_{0.5})O_{3}-(x)BiFeO_{3} for x=0.8, 0.7 and 0.6. The obtained specimens were subjected to microstructure and dielectric examinations and temperature dependences of the internal friction Q^{-1}(T) and Young's modulus E(T).

15

The Microstructure and Magnetoelectric Properties of Multiferroic Composites

52%

Bartkowska J. A., Bochenek D., Niemiec P.

Archives of Metallurgy and Materials

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2018

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vol. 63

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issue 2

16

Influence of Cobalt Admixture on the Microstructure and Dielectric Properties of PFN Ceramics

52%

Bochenek D., Niemiec P., Grabowski F.

Archives of Metallurgy and Materials

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2011

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issue 4

46%

Bochenek D., Feliksik K., Kozielski L., Adamczyk M., Clemens F.

Archives of Metallurgy and Materials

|

2016

|

issue 3

Refine search results

The Positive Temperature Coefficient of Resistivity Effect in the Pb(Fe_{1/2}Nb_{1/2})O_{3} Ceramics Admixed with Lithium

Dielectric relaxation of manganese modified Bi6Fe2Ti3O18 aurivillius type ceramics

The Pb(Fe_{1/2}Nb_{1/2})O_3 Ferroelectromagnetic Ceramics in a View of Possibilities to be Used for Electric Transducers

Technology and Properties of Ferroelectromagnetic Lead–Free BFN–Ferrite Composites

An Influence of the Synthesis Conditions οn the PFN Ceramics Properties

Electrophysical Properties of the Multiferroic BFN-Ferrite Composites Obtained by Spark Plasma Sintering and Classical Technology

Electrophysical properties of the multicomponent PbFe1/2Nb1/2O3 ceramics doped by Li

The Determination of the Magnetoelectric Coupling Coefficient in Ferroelectric–Ferromagnetic Composite Based on PZT–Ferrite

Internal Friction in the Ferroelectric – Ferromagnetic Composites

Technology and Electrophysical Properties of Multiferroic PZT–PFT Ceramics

Technology and Properties PMN-PT-PS-PFN:LI Material for Multilayer Capacitor

Technology, Physical Properties and Phase Transitions in PMN-PT-PS Ceramics

Application of Mechanical Activation in Synthesizing Multiferroic Pb(Fe1/2Nb1/2)O3 Powders

Ferroelectromagnetic Smart Structures (1-x)Pb(Fe_{0.5}Nb_{0.5})O_{3}-(x)BiFeO_{3}

The Microstructure and Magnetoelectric Properties of Multiferroic Composites

Influence of Cobalt Admixture on the Microstructure and Dielectric Properties of PFN Ceramics

Internal Friction In The PFN Ceramics With Chromium Dopand

Technology and Dielectric Properties of the KNLN Doped with Nd3+ and Pr3+ Ions

PZT-Type Ceramics Doped with Manganese, Antimony, Lanthanum and Tungsten – Technology and Physical Properties

PLZT Microfibers Technology Optimization