Conduction mechanisms in lanthanum manganite nanofibers

Shah, Syed Shaheen; Hayat, Khizar; Ali, Shahid; Rasool, Kamran; Iqbal, Yaseen

doi:10.1016/j.mssp.2018.10.008

Cited by 43 publications

(26 citation statements)

References 47 publications

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“…11(d) shows the variation of "s" with temperature (340-420 °C), demonstrating that "s" is varying inversely with temperature. This observation confirms that correlated barrier hopping (CBH) is the appropriate model to understand charge transport mechanism in these samples [57]. Thus, according to this model, AC conductivity in all the samples is due to the hopping of charge carriers between two sites over the potential barrier separating them, because of thermal activation [58].…”

Section: Fig 9 Experimental Verification Of Nyquist Plot Data With the Depression Angle Forsupporting

confidence: 73%

Structural and impedance spectroscopic study of Zn-substituted Ba5CaTi2Nb8O30 tetragonal tungsten bronze ceramics

Bendahhou

Marchet

Barkany

et al. 2021

Journal of Alloys and Compounds

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Zn-doped tungsten bronze compounds derived from Ba5CaTi2Nb8O30, with Ba5CaTi2-xZnxNb8O30 composition (x=0; 0.04 and 0.08) were synthesized by the conventional solid-state reaction route. Both solubility of Zn in Ba5CaTi2Nb8O30 and tungsten bronze formation with the P4bm space group were verified by the Rietveld method using X-ray diffraction data. The average crystallite size was of the order of 0.08 μm according to Scherrer's formula. SEM micrographs of Ba5CaTi2-xZnxNb8O30 ceramics showed high densification, low porosity, thus a homogeneous grain distribution of different sizes over the entire surface. The average grain size was in the range of 1.3 to 1.6 μm. The frequency-dependent electrical properties were analyzed by complex impedance spectroscopy. Different types of studies such as the Nyquist plot, real and imaginary impedance, conductivity, modulus formalism, and charge carrier activation energy were used to explain the microstructure-electrical properties relationships.

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Section: Fig 9 Experimental Verification Of Nyquist Plot Data With the Depression Angle Forsupporting

confidence: 73%

Structural and impedance spectroscopic study of Zn-substituted Ba5CaTi2Nb8O30 tetragonal tungsten bronze ceramics

Bendahhou

Marchet

Barkany

et al. 2021

Journal of Alloys and Compounds

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“…This observation conrms that correlated barrier hopping (CBH) is the appropriate model to understand charge transport mechanism in this sample. 51 According to this model, AC conductivity in the sample Ba 5 -CaTi 1.94 Zn 0.06 Nb 8 O 30 is due to the hopping of charge carriers between two sites over the potential barrier separating them, because of thermal activation. 52 Fig .…”

Section: Electrical Conductivity Studymentioning

confidence: 99%

Structural, dielectric and impedance spectroscopy analysis of Ba₅CaTi_1.94Zn_0.06Nb₈O₃₀ferroelectric ceramic

et al. 2020

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“…The cubic phase of LNO acted as an n-type semiconductor to release electrons, while the nano-crystallinity of the BNMO layer defects acted as a hole-absorbing electron [23][24][25].The Schottky emission mechanism is determined by the linear relationship of Ln(I) versus V 1/2 [26,27]. If the relationship is linear, this is due to the thermionic emission by holes, vacancies and defects [28][29][30][31][32], respectively. The restricted behavior of the interface and the hole trapping behavior are considered to be a case of the Schottky emission mechanism, as expected with linear relationship of Ln(I) versus V 1/2 for the BNMO/LNO/p-Si heterojunction (see the inset of Figure 5b).…”

Section: Resultsmentioning

confidence: 99%

Ferroelectric Diode Effect with Temperature Stability of Double Perovskite Bi2NiMnO6 Thin Films

et al. 2019

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Double perovskite Bi2NiMnO6 (BNMO) thin films grown on p-Si (100) substrates with LaNiO3 (LNO) buffer layers were fabricated using chemical solution deposition. The crystal structure, surface topography, surface chemical state, ferroelectric, and current-voltage characteristics of BNMO thin films were investigated. The results show that the nanocrystalline BNMO thin films on p-Si substrates without and with LNO buffer layer are monoclinic phase, which have antiferroelectric-like properties. The composition and chemical state of BNMO thin films were characterized by X-ray photoelectron spectroscopy. In the whole electrical property testing process, when the BNMO/p-Si heterojunction changed into a BNMO/LNO/p-Si heterojunction, the diode behavior of a single diode changing into two tail to tail diodes was observed. The conduction mechanism and temperature stability were also discussed.

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Conduction mechanisms in lanthanum manganite nanofibers

Cited by 43 publications

References 47 publications

Structural and impedance spectroscopic study of Zn-substituted Ba5CaTi2Nb8O30 tetragonal tungsten bronze ceramics

Structural and impedance spectroscopic study of Zn-substituted Ba5CaTi2Nb8O30 tetragonal tungsten bronze ceramics

Structural, dielectric and impedance spectroscopy analysis of Ba₅CaTi_1.94Zn_0.06Nb₈O₃₀ferroelectric ceramic

Ferroelectric Diode Effect with Temperature Stability of Double Perovskite Bi2NiMnO6 Thin Films

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Conduction mechanisms in lanthanum manganite nanofibers

Cited by 43 publications

References 47 publications

Structural and impedance spectroscopic study of Zn-substituted Ba5CaTi2Nb8O30 tetragonal tungsten bronze ceramics

Structural and impedance spectroscopic study of Zn-substituted Ba5CaTi2Nb8O30 tetragonal tungsten bronze ceramics

Structural, dielectric and impedance spectroscopy analysis of Ba5CaTi1.94Zn0.06Nb8O30ferroelectric ceramic

Ferroelectric Diode Effect with Temperature Stability of Double Perovskite Bi2NiMnO6 Thin Films

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Structural, dielectric and impedance spectroscopy analysis of Ba₅CaTi_1.94Zn_0.06Nb₈O₃₀ferroelectric ceramic