Cation ordering and order-disorder phase transition in Co-substituted Li4Ti5O12 spinels
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Jović, Nataša G.Antić, Bratislav
Kremenović, Aleksandar S.
Spasojević-de Bire, Anne
Spasojević, Vojislav
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In this paper we present the results of the synthesis, crystal structure investigations and in situ X-ray diffraction studies of the order-disorder phase transition in cobalt substituted lithium titanate oxide spinels, Li1.33xCo2-2x,Ti1+0.67x (0 less than or equal to x less than or equal to 1). Depending on the chemical composition the samples crystallize in two space groups (S.G.): Fd (3) over barm (0 less than or equal to x less than or equal to 0.40 and x = 1) and P4(3)32 (0.50 less than or equal to x less than or equal to 0.875). Samples crystallizing in the S.G. P4(3)2 are ordered spinels with a cation ordering of the 1 : 3 type at octahedral 4b and 12d sites. The cation ordering in octahedral sites is full in the sample with x = 0.75 (Li and Ti occupy 4b and 12d sites, respectively) and decreases for samples with higher/smaller x. Changes of the extinction conditions and nonlinearities in the concentration dependence of the lattice parameter in the regions 0.40 less than or equal... to x less than or equal to 0.50 and 0.875 LT x LT 1 indicate changes of the crystal symmetry (Fd (3) over barm LT ---- GT P4(3)32). The partially ordered spinel x 0.50 has a convergent, reversible, order-disorder phase transition at Tc = (1083 10) K. Samples with x 0.875 and 0.75 have an order-disorder phase transition out of our experimental ranges with T-C(x = 0.875) LT 973 K and T-C(x = 0.75) GT 1173 K. The mechanism of the phase transition is based on cation migration.
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Physica Status Solidi. A: Applied Research, 2003, 198, 1, 18-28
DOI: 10.1002/pssa.200306451
ISSN: 0031-8965
WoS: 000184662900004
Scopus: 2-s2.0-0043011016
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VinčaTY - JOUR AU - Jović, Nataša G. AU - Antić, Bratislav AU - Kremenović, Aleksandar S. AU - Spasojević-de Bire, Anne AU - Spasojević, Vojislav PY - 2003 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2655 AB - In this paper we present the results of the synthesis, crystal structure investigations and in situ X-ray diffraction studies of the order-disorder phase transition in cobalt substituted lithium titanate oxide spinels, Li1.33xCo2-2x,Ti1+0.67x (0 less than or equal to x less than or equal to 1). Depending on the chemical composition the samples crystallize in two space groups (S.G.): Fd (3) over barm (0 less than or equal to x less than or equal to 0.40 and x = 1) and P4(3)32 (0.50 less than or equal to x less than or equal to 0.875). Samples crystallizing in the S.G. P4(3)2 are ordered spinels with a cation ordering of the 1 : 3 type at octahedral 4b and 12d sites. The cation ordering in octahedral sites is full in the sample with x = 0.75 (Li and Ti occupy 4b and 12d sites, respectively) and decreases for samples with higher/smaller x. Changes of the extinction conditions and nonlinearities in the concentration dependence of the lattice parameter in the regions 0.40 less than or equal to x less than or equal to 0.50 and 0.875 LT x LT 1 indicate changes of the crystal symmetry (Fd (3) over barm LT ---- GT P4(3)32). The partially ordered spinel x 0.50 has a convergent, reversible, order-disorder phase transition at Tc = (1083 10) K. Samples with x 0.875 and 0.75 have an order-disorder phase transition out of our experimental ranges with T-C(x = 0.875) LT 973 K and T-C(x = 0.75) GT 1173 K. The mechanism of the phase transition is based on cation migration. T2 - Physica Status Solidi. A: Applied Research T1 - Cation ordering and order-disorder phase transition in Co-substituted Li4Ti5O12 spinels VL - 198 IS - 1 SP - 18 EP - 28 DO - 10.1002/pssa.200306451 ER -
@article{ author = "Jović, Nataša G. and Antić, Bratislav and Kremenović, Aleksandar S. and Spasojević-de Bire, Anne and Spasojević, Vojislav", year = "2003", abstract = "In this paper we present the results of the synthesis, crystal structure investigations and in situ X-ray diffraction studies of the order-disorder phase transition in cobalt substituted lithium titanate oxide spinels, Li1.33xCo2-2x,Ti1+0.67x (0 less than or equal to x less than or equal to 1). Depending on the chemical composition the samples crystallize in two space groups (S.G.): Fd (3) over barm (0 less than or equal to x less than or equal to 0.40 and x = 1) and P4(3)32 (0.50 less than or equal to x less than or equal to 0.875). Samples crystallizing in the S.G. P4(3)2 are ordered spinels with a cation ordering of the 1 : 3 type at octahedral 4b and 12d sites. The cation ordering in octahedral sites is full in the sample with x = 0.75 (Li and Ti occupy 4b and 12d sites, respectively) and decreases for samples with higher/smaller x. Changes of the extinction conditions and nonlinearities in the concentration dependence of the lattice parameter in the regions 0.40 less than or equal to x less than or equal to 0.50 and 0.875 LT x LT 1 indicate changes of the crystal symmetry (Fd (3) over barm LT ---- GT P4(3)32). The partially ordered spinel x 0.50 has a convergent, reversible, order-disorder phase transition at Tc = (1083 10) K. Samples with x 0.875 and 0.75 have an order-disorder phase transition out of our experimental ranges with T-C(x = 0.875) LT 973 K and T-C(x = 0.75) GT 1173 K. The mechanism of the phase transition is based on cation migration.", journal = "Physica Status Solidi. A: Applied Research", title = "Cation ordering and order-disorder phase transition in Co-substituted Li4Ti5O12 spinels", volume = "198", number = "1", pages = "18-28", doi = "10.1002/pssa.200306451" }
Jović, N. G., Antić, B., Kremenović, A. S., Spasojević-de Bire, A.,& Spasojević, V.. (2003). Cation ordering and order-disorder phase transition in Co-substituted Li4Ti5O12 spinels. in Physica Status Solidi. A: Applied Research, 198(1), 18-28. https://doi.org/10.1002/pssa.200306451
Jović NG, Antić B, Kremenović AS, Spasojević-de Bire A, Spasojević V. Cation ordering and order-disorder phase transition in Co-substituted Li4Ti5O12 spinels. in Physica Status Solidi. A: Applied Research. 2003;198(1):18-28. doi:10.1002/pssa.200306451 .
Jović, Nataša G., Antić, Bratislav, Kremenović, Aleksandar S., Spasojević-de Bire, Anne, Spasojević, Vojislav, "Cation ordering and order-disorder phase transition in Co-substituted Li4Ti5O12 spinels" in Physica Status Solidi. A: Applied Research, 198, no. 1 (2003):18-28, https://doi.org/10.1002/pssa.200306451 . .