Biquadratic coupling between two ordering parameters in 1 : 3 B-site ordered spinels
Abstract
The Letter presents an analysis of the order-disorder phase transition mechanism, Fd (3) over bar LT ---- GT P4(3)32, in 1:3 B-site ordered spinels, Li1.33xCo2-2xTi1+0.67xO4 and Li1-0.5xFe2.5xMn2-2xO4, by using the Landaus theory of phase transitions. Two ordering parameters were used to describe cation distribution: Q(1) for cation distribution between tetrahedral and octahedral sites. and Q(2) for cation distribution between two octahedral sites. Analysis of the topology of the order parameter vector space indicates biquadratic coupling between Q(1) and Q(2). For the Li1.33xCo2-2xTi1+0.67xO4 (x = 0.50) in the low-temperature ferroelastic phase both ordering parameters differ from zero and they both influence on the spontaneous strain scalar values. (C) 2004 Elsevier B.V. All rights reserved.
Keywords:
structural phase transition / ordered spinel / Landau theory / biquadratic couplingSource:
Physics Letters A, 2004, 324, 5-6, 501-506
DOI: 10.1016/j.physleta.2004.03.020
ISSN: 0375-9601
WoS: 000220997200022
Scopus: 2-s2.0-1842851891
Collections
Institution/Community
VinčaTY - JOUR AU - Kremenović, Aleksandar S. AU - Antić, Bratislav PY - 2004 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2764 AB - The Letter presents an analysis of the order-disorder phase transition mechanism, Fd (3) over bar LT ---- GT P4(3)32, in 1:3 B-site ordered spinels, Li1.33xCo2-2xTi1+0.67xO4 and Li1-0.5xFe2.5xMn2-2xO4, by using the Landaus theory of phase transitions. Two ordering parameters were used to describe cation distribution: Q(1) for cation distribution between tetrahedral and octahedral sites. and Q(2) for cation distribution between two octahedral sites. Analysis of the topology of the order parameter vector space indicates biquadratic coupling between Q(1) and Q(2). For the Li1.33xCo2-2xTi1+0.67xO4 (x = 0.50) in the low-temperature ferroelastic phase both ordering parameters differ from zero and they both influence on the spontaneous strain scalar values. (C) 2004 Elsevier B.V. All rights reserved. T2 - Physics Letters A T1 - Biquadratic coupling between two ordering parameters in 1 : 3 B-site ordered spinels VL - 324 IS - 5-6 SP - 501 EP - 506 DO - 10.1016/j.physleta.2004.03.020 ER -
@article{ author = "Kremenović, Aleksandar S. and Antić, Bratislav", year = "2004", abstract = "The Letter presents an analysis of the order-disorder phase transition mechanism, Fd (3) over bar LT ---- GT P4(3)32, in 1:3 B-site ordered spinels, Li1.33xCo2-2xTi1+0.67xO4 and Li1-0.5xFe2.5xMn2-2xO4, by using the Landaus theory of phase transitions. Two ordering parameters were used to describe cation distribution: Q(1) for cation distribution between tetrahedral and octahedral sites. and Q(2) for cation distribution between two octahedral sites. Analysis of the topology of the order parameter vector space indicates biquadratic coupling between Q(1) and Q(2). For the Li1.33xCo2-2xTi1+0.67xO4 (x = 0.50) in the low-temperature ferroelastic phase both ordering parameters differ from zero and they both influence on the spontaneous strain scalar values. (C) 2004 Elsevier B.V. All rights reserved.", journal = "Physics Letters A", title = "Biquadratic coupling between two ordering parameters in 1 : 3 B-site ordered spinels", volume = "324", number = "5-6", pages = "501-506", doi = "10.1016/j.physleta.2004.03.020" }
Kremenović, A. S.,& Antić, B.. (2004). Biquadratic coupling between two ordering parameters in 1 : 3 B-site ordered spinels. in Physics Letters A, 324(5-6), 501-506. https://doi.org/10.1016/j.physleta.2004.03.020
Kremenović AS, Antić B. Biquadratic coupling between two ordering parameters in 1 : 3 B-site ordered spinels. in Physics Letters A. 2004;324(5-6):501-506. doi:10.1016/j.physleta.2004.03.020 .
Kremenović, Aleksandar S., Antić, Bratislav, "Biquadratic coupling between two ordering parameters in 1 : 3 B-site ordered spinels" in Physics Letters A, 324, no. 5-6 (2004):501-506, https://doi.org/10.1016/j.physleta.2004.03.020 . .