A new ferroelectric oxide Li2Pb2Pr2W2Ti4Nb4O30: Synthesis and characterization

Parida, B. N.; Piyush, R Das; Padhee, R.; Choudhary, R. N. P.

doi:10.1016/j.jpcs.2012.01.013

Cited by 77 publications

(21 citation statements)

References 34 publications

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“…The impedance parameters of the material give us data having both real (resistive) and imaginary (reactive) components. The basic equations/formalism of impedance and electrical modulus has been used to study impedance spectroscopic parameters of the samples [15]. Figure 3 shows the variation of real part (Z΄) and imaginary part (Z˝) of impedance with frequency at different temperatures for different concentrations of Pr in Bi 1x Pr x FeO 3 .…”

Section: Impedance Analysismentioning

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: Impedance Analysismentioning

confidence: 99%

Tailoring of electrical properties of BiFeO3 by praseodymium

et al. 2013

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“…Accordingly, if the binary system is composed of A and B oxides, we could only find one A 5 B 10 O 30 TB type where six A sites are occupied by five ions; this is a typical TB structure. Though a lot of work on the niobates and vanadates of TB structural family have been reported in the past [8][9][10][11][12][13][14], we could not find any work on the titled compound. Giess et al [13] reported the structural and dielectric properties of KPb 2 Nb 5 O 15 with Pb and K at the A site and Nb at the B site of TB structure.…”

Section: Introductionmentioning

confidence: 78%

Impedance spectroscopy study of Na2SmV5O15 ceramics

et al. 2014

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Abstract:The polycrystalline Na 2 SmV 5 O 15 (NSV), a new member of the tungsten bronze (TB) family, was prepared by a mixed-oxide technique. The room-temperature X-ray diffraction (XRD) confirmed the formation of single phase compound with orthorhombic crystal structure. The scanning electron microscopy (SEM) analysis indicated that the compound has homogeneous micrograph with a uniform distribution of small grains over the entire surface of the sample. The analysis of impedance spectra of NSV in a low-temperature range (100 ℃ to 100 ℃) at different frequencies exhibited interesting electrical properties like the contribution of bulk effect in conduction process. The study of imaginary part of the impedance at different temperatures showed existence of relaxation peak with its shift towards higher frequency on increasing temperature. This suggested the presence of frequency and temperature dependent relaxation process in the material. The loss peak spectra were found to abide by Arrhenius law with small activation energy of 0.12 eV. The temperature dependence of AC and DC electrical conductivity ( AC  and DC  ) was also obtained.

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“…28 At high temperatures Z 00 and M 00 peaks coincide proving the gradual inclination to Debye-like nature. 27 These curves show two apparent relaxations À À À the left region indicating a conduction process, while the right region indicating the localized motion of ions. The peak shifts toward higher frequency and exhibits the correlation between the motions of mobile charge carriers.…”

Section: Cole-cole Plotmentioning

confidence: 99%

“…The surface characteristics and the methods of preparation might have a®ected the shape of Cole-Cole plots thus con¯rming that the electrical response is due to bulk property and the presence of grain boundary. 27 The combined plot of imaginary parts of normalized M 00 and Z 00 with frequency of the sample Pb 2 Sr 2 CaCu 2 O 9 at di®erent temperatures distinguishes whether relaxation process is due to short range or long range motion of charge carriers. The peaks (Z 00 max/M 00 max) shift toward higher frequency range upon increase of temperature [Figs.…”

Section: Cole-cole Plotmentioning

confidence: 99%

Dielectric Response and Transport Properties of Pb₂Sr₂CaCu₂O₉ [Lead Strontium Calcium Copper Oxide]

Jacob

Isac

2017

Rep. Adv. Phys. Sci.

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High dielectric permittivity, good mechanical properties and excellent thermal stability are highly desired qualities for the dielectric materials used in embedded capacitors and energystorage devices. This study reports the temperature dependence and very low loss factor of Pb 2 Sr 2 CaCu 2 O 9 ceramics. X-ray di®raction (XRD) and scanning electron microscope (SEM) are used to analyze the sample. The dielectric properties of the material prepared has been investigated in the frequency range 42-1 MHz and in the temperature range 303-873 K. The result reveals that Pb 2 Sr 2 CaCu 2 O 9 have high dielectric constant with signi¯cant temperature and frequency dependence which makes them appropriate in the application of miniaturization of electronic devices. The dielectric constant and the loss factor decreases with increase in frequency of the applied¯eld. Impedance studies con¯rm that dielectric relaxation in the material is of non-Debye type. Conductivity studies proves quality information related to the charge transport properties. The frequency analysis of modulus properties pictures a distribution of the relaxation time existing in the system. The new ceramic material Pb 2 Sr 2 CaCu 2 O 9 will be a promising candidate for uses in embedded capacitors, especially in high-temperature circumstance.

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A new ferroelectric oxide Li2Pb2Pr2W2Ti4Nb4O30: Synthesis and characterization

Cited by 77 publications

References 34 publications

Tailoring of electrical properties of BiFeO3 by praseodymium

Tailoring of electrical properties of BiFeO3 by praseodymium

Impedance spectroscopy study of Na2SmV5O15 ceramics

Dielectric Response and Transport Properties of Pb₂Sr₂CaCu₂O₉ [Lead Strontium Calcium Copper Oxide]

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A new ferroelectric oxide Li2Pb2Pr2W2Ti4Nb4O30: Synthesis and characterization

Cited by 77 publications

References 34 publications

Tailoring of electrical properties of BiFeO3 by praseodymium

Tailoring of electrical properties of BiFeO3 by praseodymium

Impedance spectroscopy study of Na2SmV5O15 ceramics

Dielectric Response and Transport Properties of Pb2Sr2CaCu2O9 [Lead Strontium Calcium Copper Oxide]

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Dielectric Response and Transport Properties of Pb₂Sr₂CaCu₂O₉ [Lead Strontium Calcium Copper Oxide]