Defect chemistry and relaxation processes: effect of an amphoteric substituent in lead-free BCZT ceramics

Literature Information

Publication Date 2016-10-17
DOI 10.1039/C6CP06244J
Impact Factor 3.676
Authors

Indrani Coondoo, Neeraj Panwar, Reddithota Vidyasagar


View Original

Abstract

The effect of praseodymium (Pr), an amphoteric substituent, on phase transition, dielectric relaxation and electrical conductivity has been studied and analysed in 0.5Ba(Zr0.2Ti0.8)O3-0.5(Ba0.7Ca0.3)TiO3 (BCZT) ceramics synthesized by a solid state reaction method. Structural investigations showed co-existence of two phases – tetragonal (P4mm) and rhombohedral (R3m) – for compositions with x ≤ 0.05 wt% Pr. Temperature dependent dielectric studies revealed two phase transitions – rhombohedral (R) → tetragonal (T) and T → cubic (C) – that gradually evolved into one T → C transition for x > 0.05 wt% Pr in BCZT. A dielectric relaxation behaviour was observed in the temperature range of 275–500 °C that was attributed to the localized relaxation process (short-range hopping motion of oxygen vacancies) in the bulk of the material. Grain and grain boundary conductivity evaluated from the impedance data revealed that Pr acts as a donor dopant for x ≤ 0.05 wt% while it is an acceptor for higher concentration, in accordance with XRD observations. Defect chemistry analysis for better interpretation of the acquired data is presented. Frequency and temperature dependent ac conductivity studies were also performed and the obtained activation energy values were associated with possible conduction mechanisms.

Related Literature

Binderless thin films of zeolite-templated carbon electrodes useful for electrochemical microcapacitors with ultrahigh rate performance

Ángel Berenguer-Murcia, Ramiro R. Ruiz-Rosas, Jaime García-Aguilar, Khanin Nueangnoraj, Hirotomo Nishihara, Emilia Morallón, Takashi Kyotani, Diego Cazorla-Amorós

2013-05-13 Communication

DOI: 10.1039/C3CP51945G

Electronic structure and morphology of dark oxides on zinc generated by electrochemical treatment

Paul Schneider, Bi-Ju Liu, Sergiy Borodin, Bin Ren, Andreas Erbe

2013-04-24 Paper

DOI: 10.1039/C3CP44714F

Visible light-induced OH radicals in Ga2O3: an EPR study

Zeev Tzitrinovich, Anat Lipovsky, Aharon Gedanken, Rachel Lubart

2013-06-11 Paper

DOI: 10.1039/C3CP00102D

Spectral challenges of individual wavelength-scale particles: strong phonons and their distorted lineshapes

Aruna Ravi, Marvin A. Malone, Antriksh Luthra, David Lioi, James V. Coe

2013-05-14 Perspective

DOI: 10.1039/C3CP51422F

Orientation control of liquid crystals using carbon-nanotube–magnetic particle hybrid materials

Hyeon Su Jeong, Sang Cheon Youn, Yun Ho Kim, Hee-Tae Jung

2013-04-24 Communication

DOI: 10.1039/C3CP00052D

Noble metal catalyzed preparation of Ni2P/α-Al2O3

Xuguang Liu, Lei Xu

2013-04-30 Paper

DOI: 10.1039/C3CP51170G

Photoswitchable interactions between photochromic organic diarylethene and surface plasmon resonance of gold nanoparticles in hybrid thin films

Arnaud Spangenberg, Rémi Métivier, Kunihiro Shibata, Arnaud Brosseau, Johan Grand, Jean Aubard, Pei Yu, Tsuyoshi Asahi, Keitaro Nakatani

2013-04-15 Paper

DOI: 10.1039/C3CP50770J

Large excited state two photon absorptions in the near infrared region of surprisingly stable radical cations of (ferrocenyl)indenes

Laura Orian, Stefano Scuppa, Saverio Santi, Moreno Meneghetti

2013-06-03 Paper

DOI: 10.1039/C3CP51257F

You might also like

Compound Q&A

How is Ethyl 4-chlorothieno[2,3-b]pyridine-5-carboxylate (CAS: 59713-58-5) typically synthesized?

Ethyl 4-chlorothieno[2,3-b]pyridine-5-carboxylate (CAS: 59713-58-5) can be synth...

59713-58-5Ethyl 4-chlorothieno...
Compound Q&A

What regulatory guidelines apply to 5-Methyl-1H-indole-3-carbaldehyde (CAS: 52562-50-2)?

5-Methyl-1H-indole-3-carbaldehyde (CAS: 52562-50-2) is subject to various regula...

52562-50-25-Methyl-1H-indole-3...
Compound Q&A

What are the physical and chemical properties of (1,3-Dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl)boronic acid (CAS: 223418-73-3)?

(1,3-Dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-5-pyrimidinyl)boronic acid is a white...

223418-73-3(1,3-Dimethyl-2,4-di...
Compound Q&A

How should waste containing Sulfocostunolide A (CAS: 1016983-51-9) be handled?

Waste containing Sulfocostunolide A (CAS: 1016983-51-9) should be handled with c...

1016983-51-9Sulfocostunolide A
Compound Q&A

What precautions should be taken when handling Murraxocin (CAS: 88478-44-8)?

When handling Murraxocin (CAS: 88478-44-8), ensure proper personal protective eq...

88478-44-8Murraxocin
Compound Q&A

What are the physical and chemical properties of Formvar (CAS: 63148-64-1)?

Formvar (CAS: 63148-64-1) is an alkyd resin characterized by a high molecular we...

63148-64-1Formvar(R)
Compound Q&A

Is (S)-4-benzyl-2-((benzyloxy)methyl)morpholine (CAS: 205242-66-6) safe?

(S)-4-benzyl-2-((benzyloxy)methyl)morpholine is generally safe when handled with...

205242-66-6(S)-4-benzyl-2-((ben...
Compound Q&A

What industries use Methyl 1-(5-bromo-2-pyrimidinyl)cyclopropanecarboxylate (CAS: 1447607-69-3)?

Methyl 1-(5-bromo-2-pyrimidinyl)cyclopropanecarboxylate (CAS: 1447607-69-3) is p...

1447607-69-3Methyl 1-(5-bromo-2-...
Compound Q&A

Is 2-Methyl-1-phenyl-1-propanamine hydrochloride (CAS: 24290-47-9) safe?

2-Methyl-1-phenyl-1-propanamine hydrochloride (CAS: 24290-47-9) is generally con...

24290-47-92-Methyl-1-phenyl-1-...
Compound Q&A

How is 3-(4-Bromophenyl)-2-methylpropanoic acid (CAS: 66735-01-1) typically synthesized?

3-(4-Bromophenyl)-2-methylpropanoic acid is synthesized through a multi-step pro...

66735-01-13-(4-Bromophenyl)-2-...

Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

Recommended Compounds

Recommended Suppliers

Disclaimer
This page provides academic journal information for reference and research purposes only. We are not affiliated with any journal publishers and do not handle publication submissions. For publication-related inquiries, please contact the respective journal publishers directly.
If you notice any inaccuracies in the information displayed, please contact us at support@chemtradehub.com. We will promptly review and address your concerns.