Fe3+-substitution effect on the thermal variation of J–E characteristics and DC resistivity of quadruple perovskite CaCu3Ti4O12

Kunal B. Modi; Pooja Y. Raval; Dolly J. Parekh; Shrey K. Modi; Niketa P. Joshi; Akshay R. Makadiya; Nimish H. Vasoya; Utpal S. Joshi

doi:10.1088/1674-4926/43/3/032001

Journals >Journal of Semiconductors >Volume 43 >Issue 3 >Page 032001 > Article

Journal of Semiconductors
Vol. 43, Issue 3, 032001 (2022)

Fe³⁺-substitution effect on the thermal variation of J–E characteristics and DC resistivity of quadruple perovskite CaCu₃Ti₄O₁₂

Kunal B. Modi¹, Pooja Y. Raval², Dolly J. Parekh¹, Shrey K. Modi³, Niketa P. Joshi¹, Akshay R. Makadiya¹, Nimish H. Vasoya⁴, and Utpal S. Joshi⁵

Author Affiliations

¹Department of Physics, Saurashtra University, Rajkot 360005, India

²Department of Physics, C. U. Shah University, Wadhwan City, Surendranagar 363030, India

³Department of Environment Engineering, L. D. Engineering College, Ahmedabad 380015, India

⁴Department of Balbhavan, Children´s University, Sector – 20, Gandhinagar 382015, India

⁵Department of Physics, University School of Sciences, Gujarat University, Ahmedabad 380009, India

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DOI: 10.1088/1674-4926/43/3/032001 Cite this Article

Kunal B. Modi, Pooja Y. Raval, Dolly J. Parekh, Shrey K. Modi, Niketa P. Joshi, Akshay R. Makadiya, Nimish H. Vasoya, Utpal S. Joshi. Fe³⁺-substitution effect on the thermal variation of J–E characteristics and DC resistivity of quadruple perovskite CaCu₃Ti₄O₁₂[J]. Journal of Semiconductors, 2022, 43(3): 032001 Copy Citation Text

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(Color online) Plots of J–E characteristic recorded at different temperatures for a series of cubic perovskites, CaCu3–xTi4–xFe2xO12 (x = 0.0–0.7).

Fig. 1. (Color online) Plots of J–E characteristic recorded at different temperatures for a series of cubic perovskites, CaCu_3–xTi_4–xFe_2xO₁₂ (x = 0.0–0.7).

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Williamson-Hall plots for all the samples of a series CaCu3–xTi4–xFe2xO12.

Fig. 2. Williamson-Hall plots for all the samples of a series CaCu_3–xTi_4–xFe_2xO₁₂.

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Fig. 3. (Color online) ln J against E^1/2 plots at different temperatures for polycrystalline samples of quadruple perovskite series, CaCu_3–xTi_4–xFe_2xO₁₂.

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Fig. 4. (Color online) Plots of ln J_o against temperature for the different compositions.

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Fig. 5. (Color online) Arrhenius plots for a quadruple perovskite series, CaCu_3–xTi_4–xFe_2x O₁₂.

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Fe^3+_ content (x)	Strain 10^–4	a (Å) ±0.002 Å	d_x (g/cm³)	d (g/cm³)	f	D (μm)	δ (10¹⁰m^–2)	T_sL (K)	E_s (V/cm) T = 473 K	J_max (mA/cm²)	E_a1 (eV)	E_a2 (eV)
T_sL is the lowest temperature at which switching action takes place.E_s is the threshold value of the electric field beyond which non-ohmic behavior is observed. J_max is the maximum current density value. E_a1 and E_a2 are the activation energies determined from Arrhenius plots below and above the transition temperature, respectively.
0.0	–4.54	7.391	5.056	4.744	0.062	3.7	7.30	473	978	327	0.33	0.43
0.1	–6.16	7.388	5.061	4.712	0.069	–	–	373	570	270	0.29	0.29
0.3	–6.77	7.387	5.064	4.704	0.071	7.5	1.78	373	525	225	0.22	0.21
0.5	–5.96	7.400	5.038	4.556	0.096	7.9	1.60	373	261	225	0.25	0.15
0.7	–6.95	7.411	5.016	4.566	0.090	3.4	8.65	373	300	225	0.27	0.21

Table 1. Structural, microstructural, and electric parameters for a series of cubic perovskites.

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Fe³⁺ content (x)	Cation distribution
0.0	[ ] { }
0.1	[ ] { }
0.3	[ ] { }
0.5	[ ] { }
0.7	[ ] { }

Table 2. Distribution of metallic cations (Ca⁺², Cu⁺², Ti⁺⁴ and Fe⁺³) among the available crystallographic sites determined from Rietvield refinement of X-ray powder diffraction data ( T = 300 K) for CaCu_3–xTi₄Fe_2xO₁₂ ( x = 0.0–0.7) system.

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