Synthesis and characterization of polycrystalline Ba5CaTi2-xMxNb8O30 (M=Cu) tungsten bronze electro ceramics

Jindal, Shilpi; Vasishth, Ajay; Devi, Sheela; Singh, B. P.

doi:10.1080/00150193.2017.1362278

Cited by 3 publications

(6 citation statements)

References 19 publications

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“…The P-E hysteresis loop of Ba 5 CaTi 2Àx Co x Nb 8 O 30 (x ¼ 0:00, 0.02, 0.04 and 0.08) ceramics recorded at room temperature is shown in Fig. 5.…”

Section: Ferroelectric Studymentioning

confidence: 99%

“…The calculated values of crystallite size for all the samples of cobaltsubstituted Ba 5 CaTi 2Àx Co X Nb 8 O 30 compound are given in Table 1. The lattice parameters (a; c) were calculated by using X-Pert high score computer software program and the calculated values are given in Table 1.…”

Section: Characterizationsmentioning

confidence: 99%

“…The detailed literature study reveals that a lot of work has been carried out on various TB ferroelectric ceramics of niobates, tantalates and vanadates having tetragonal TB (TTB) structure. Kiran et al 10 have synthesized Ba 5 in their stoichiometric proportions. The powder mixture was thoroughly grinded by an agate mortar for 7-8 h and then passed through sieve of 75 micron meter.…”

Section: Introductionmentioning

confidence: 99%

“…Based on these extraordinary properties, these lead-free ferroelectric materials show a great promise in various electronic devices such as transducers, actuators, capacitors, ferroelectric random access memory (FERM) and microwave tunable device applications. [1][2][3][4][5] The TB-type structure [6][7][8][9] consists of a complex array of distorted BO 6 octahedral sharing corners in such a way that three different types of interstices (A, B and C) are available for cations' substitution in the general formula, where A 1 and A 2 sites are commonly filled by divalent or trivalent cations, B 1 and B 2 sites by tetravalent or pentavalent cations and C site being small, regularly remains vacant giving the general formula A 6 B 10 O 30 . It has been found that different ionic substitutions in the above-mentioned sites can play an important role in tailoring their physical and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

“…This process is called recrystallization and depends on the high temperature sintering conditions and the concentration of the dopant. Figure 3 shows the temperature dependence of dielectric constant for Ba 5 CaTi 2Àx Co x Nb 8 O 30 (x ¼ 0:00, 0.02, 0.04 and 0.08) ceramics at 1, 10 and 100 kHz. The dielectric constant was initially observed to increase very slowly with the increase in temperature and then increased quickly.…”

mentioning

confidence: 99%

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Interdependence between electrical and magnetic properties of polycrystalline cobalt-substituted tungsten bronze multiferroic ceramics

Jindal

Devi²,

Vasishth

et al. 2018

J. Adv. Dielect.

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Polycrystalline cobalt-substituted tungsten bronze ferroelectric ceramics with chemical composition Ba 5 CaTi 2Àx Co X Nb 8 O 30 (x ¼ 0:00, 0.02, 0.04 and 0.08) were synthesized by solid state reaction technique. X-ray diffraction (XRD) technique was used to confirm the phase formation and it revealed the formation of single phase tetragonal structure with space group P4bm. The surface morphology of the samples was studied by using the scanning electron microscopy (SEM) technique. The dielectric properties such as dielectric constant and dielectric loss have been investigated as a function of temperature and frequency. The P-E and M-H studies confirmed the coexistent of ferroelectricity and magnetism at room temperature. The P-E loop study indicated an increase in the coercive field while the M-H study depicted a decrease in the magnetization with the incorporation of cobalt ions.

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“…The P-E hysteresis loop of Ba 5 CaTi 2Àx Co x Nb 8 O 30 (x ¼ 0:00, 0.02, 0.04 and 0.08) ceramics recorded at room temperature is shown in Fig. 5.…”

Section: Ferroelectric Studymentioning

confidence: 99%

Section: Characterizationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Interdependence between electrical and magnetic properties of polycrystalline cobalt-substituted tungsten bronze multiferroic ceramics

Jindal

Devi²,

Vasishth

et al. 2018

J. Adv. Dielect.

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Investigation of tungsten bronze ferroelectric ceramic by conventional and mechanical activation processes

Jindal

Aggarwal

Vasishth

et al. 2022

Materials Today: Proceedings

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Study of Structural and Dielectrical Properties of Lead Free Polycrystalline Electro Ceramics Ba5CaTi2Nb8O30 (BCTN) for Microwave Tunable Device Applications

Jindal¹,

Devi²,

Vasishth³

et al. 2018

MSA

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Tungsten bronze structure ceramics have found vital potential in many applications such as actuators, transducer, electro-optic, ferroelectric random access memory and microwave devices. These type ceramics are extensively used in many industrial applications due to their spontaneous polarization and wellknown for its high dielectric constant, low dielectric loss, low leakage current density, good thermal stability and high piezoelectric coefficient. In present work, Ba 5 CaTi 2 Nb 8 O 30 (BCTN) has been synthesized first time through solid state reaction method. The microstructures, dielectric, ferroelectric, ferromagnetic and Raman spectra have been investigated by means of X-ray diffraction, Scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), LCR meter, P-E loop tracer, VSM and Raman spectrometer respectively. X-ray diffraction study revealed the formation of single phase tetragonal structure with space group P4bm. The crystallite size was observed to be in the range 14.4 nm. Detailed dielectric properties of BCTN compound as function of temperature at different frequencies show that sample exhibits diffuse type transition at curie temperature 316˚C. The P-E and M-H studies confirmed the coexistent ferroelectricity and magnetism at room temperature.

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Synthesis and characterization of polycrystalline Ba₅CaTi_2-xM_xNb₈O₃₀ (M=Cu) tungsten bronze electro ceramics

Cited by 3 publications

References 19 publications

Interdependence between electrical and magnetic properties of polycrystalline cobalt-substituted tungsten bronze multiferroic ceramics

Interdependence between electrical and magnetic properties of polycrystalline cobalt-substituted tungsten bronze multiferroic ceramics

Investigation of tungsten bronze ferroelectric ceramic by conventional and mechanical activation processes

Study of Structural and Dielectrical Properties of Lead Free Polycrystalline Electro Ceramics Ba<SUB>5</SUB>CaTi<SUB>2</SUB>Nb<SUB>8</SUB>O<SUB>30</SUB> (BCTN) for Microwave Tunable Device Applications

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Synthesis and characterization of polycrystalline Ba5CaTi2-xMxNb8O30 (M=Cu) tungsten bronze electro ceramics

Cited by 3 publications

References 19 publications

Interdependence between electrical and magnetic properties of polycrystalline cobalt-substituted tungsten bronze multiferroic ceramics

Interdependence between electrical and magnetic properties of polycrystalline cobalt-substituted tungsten bronze multiferroic ceramics

Investigation of tungsten bronze ferroelectric ceramic by conventional and mechanical activation processes

Study of Structural and Dielectrical Properties of Lead Free Polycrystalline Electro Ceramics Ba&lt;SUB&gt;5&lt;/SUB&gt;CaTi&lt;SUB&gt;2&lt;/SUB&gt;Nb&lt;SUB&gt;8&lt;/SUB&gt;O&lt;SUB&gt;30&lt;/SUB&gt; (BCTN) for Microwave Tunable Device Applications

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Synthesis and characterization of polycrystalline Ba₅CaTi_2-xM_xNb₈O₃₀ (M=Cu) tungsten bronze electro ceramics

Study of Structural and Dielectrical Properties of Lead Free Polycrystalline Electro Ceramics Ba<SUB>5</SUB>CaTi<SUB>2</SUB>Nb<SUB>8</SUB>O<SUB>30</SUB> (BCTN) for Microwave Tunable Device Applications