Structural, electronic, and magnetic entropy contributions of the orbital order-disorder transition in LaMnO3

Phase Transitions

Volumn 84, Issue 3, 2011, Pages 284-290

  Ramirez, F E N ^a   Cunha, B B ^a   Alves, W A ^a   Jardim, R F ^b   Muccillo, R ^c   Souza, J A ^a  

^a UNIVERSIDADE FEDERAL DO ABC   (Brazil)

^b UNIVERSITY OF SÃO PAULO   (Brazil)

^c INSTITUTO DE PESQUISAS ENERGÉTICAS E NUCLEARES   (Brazil)

Author keywords

electronic entropy; magnetic entropy; orbital transition; order disorder transition; phase transition; structural entropy

Indexed keywords

CRITICAL TEMPERATURES; ELECTRICAL CONDUCTIVITY; ELECTRICAL RESISTIVITY; ELECTRONIC ENTROPY; ELECTRONIC SYSTEMS; JAHN-TELLER; MAGNETIC ENTROPY; MAGNETIC EXCHANGE INTERACTIONS; ORBITAL ORDER-DISORDER TRANSITION; ORBITAL TRANSITION; PRESSURE DERIVATIVES; STRUCTURAL ENTROPY; THERMODYNAMIC EQUATIONS; VOLUME CHANGE;

ELECTRIC CONDUCTIVITY; ENTROPY; X RAY DIFFRACTION;

PHASE TRANSITIONS;

EID: 79952654045     PISSN: 01411594     EISSN: 10290338     Source Type: Journal    
DOI: 10.1080/01411594.2010.534656     Document Type: Article

References (29)

1. M. Imada, A. Fujimori, and Y. Tokura, Metal-insulator transitions, Rev. Mod. Phys. 70 (1998), pp. 1039-1263.
2. J.V.D. Brink, Orbital-only models: Ordering and excitations, New J. Phys. 6 (2004), pp. 201-218.
3. S.-W. Cheong and H.Y. Hwang, Colossal Magnetoresistance Oxides, Chapter 3, Y. Tokura, ed., Gordeon & Breach, London, 1999, pp. 87-117.
4. E. Dagotto, T. Hotta, and A. Moreo, Colossal magnetoresistant materials: The key role of phase separation, Phys. Rep. 344 (2001), pp. 1-153. (Pubitemid 33668076)
5. E. Pavarini and E. Koch, Origin of Jahn-Teller distortion and orbital order in LaMnO3, Phys. Rev. Lett. 104 (2010), p. 086402.
6. B.R.K. Nanda and S. Satpathy, Magnetic and orbital order in LaMnO3 under uniaxial strain: A model study, Phys. Rev. B 81 (2010), p. 174423.
7. T. Hashimoto, S. Ishibashi, and K. Terakura, Jahn-Teller distortion and magnetic structure in LaMnO3: A first-principles theoretical study with full structure optimizations, Phys. Rev. B 82 (2010), p. 045124.
8. (a) P.-G. DeGennes, Effects of double exchange in magnetic crystals, Phys. Rev. 118 (1960), pp. 141-154;
9. (b) J.B. Good-enough, Spin-orbit-coupling effects in transition-metal compounds, Phys. Rev. 171 (1968), pp. 466-479.
10. E.O. Wollan and W.C. Koehler, Neutron diffraction study of the magnetic properties of the series of perovskite-type compounds [(1-x)La,xCa]MnO3, Phys. Rev. 100 (1955), pp. 545-563.
11. J. Rodriguez-Carvajal, M. Hennion, F. Moussa, A.H. Moudden, L. Pinsard, and A. Revcolevschi, Neutron-diffraction study of the Jahn-Teller transition in stoichiometric LaMnO3, Phys. Rev. B 57 (1998), pp. R3189-R3192. (Pubitemid 128499058)
12. E. Granado, J.A. Sanjurjo, C. Rettori, J.J. Neumeier, and S.B. Oseroff, Order-disorder in the Jahn-Teller transition of LaMnO3: A Raman scattering study, Phys. Rev. B 62 (2000), pp. 11304-11307. (Pubitemid 32373579)
13. T. Chatterji, F. Fauth, B. Ouladdiaf, P. Mandal, and B. Ghosh, Volume collapse in LaMnO3 caused by an orbital order-disorder transition, Phys. Rev. B 68 (2003), p. 052406.
14. 1-xSrxMnO3 (0.135 x 50.45) in the temperature range 300-900 K, Phys. Rev. B 76 (2007), p. 024407.
15. J.-S. Zhou and J.B. Goodenough, Paramagnetic phase in single-crystal LaMnO3, Phys. Rev. B 60 (1999), pp. R15002-R15004.
16. 1-xCaxMnO3, Phys. Rev. B 73 (2006), p. 094444.
17. M.C. Sanchez, G. Subias, J. Garcia, and J. Blasco, Cooperative Jahn-Teller phase transition in LaMnO3 studied by X-ray absorption spectroscopy, Phys. Rev. Lett. 90 (2003), p. 045503.
18. H.E. Stanley, Introduction to Phase Transitions and Critical Phenomena, Oxford University Press, New York, 1971.
19. J.A. Souza, H. Terashita, E. Granado, R.F. Jardim, R. Muccillo, and N.F. Oliveira Jr, Polaron liquid-gas crossover at the orthorhombic-rhombohedral transition of manganites, Phys. Rev. B 78 (2008), p. 054411.
20. J. Mira, J. Rivas, L.E. Hueso, F. Rivadula, M.A. Lopez Quintela, M.A. Senaris Rodrigues, and C.A. Ramos, Strong reduction of lattice effects in mixed-valence manganites related to crystal symmetry, Phys. Rev. B 65 (2001), p. 024418.
21. M.T. Causa, G. Alejandro, R. Zysler, F. Prado, A. Caneiro, and M. Tovar, Jahn-Teller effects on the superexchange interactions in LaMnO3, J. Magn. Magn. Mater. 196-197 (1999), pp. 506-508.
22. J.A. Souza, J.J. Neumeier, B.D. White, and Y.-K. Yu, Analysis of the critical behavior associated with the antiferromagnetic transitions of LaMnO3 and CaMnO3, Phys. Rev. B 81 (2010), p. 172410.
23. K.T. Jacob and M. Attaluri, Refinement of thermodynamic data for LaMnO3, J. Mater. Chem. 13 (2003), pp. 934-942.
24. K. Tobe, T. Kimura, Y. Okimoto, and Y. Tokura, Anisotropic optical spectra in a detwinned LaMnO3 crystal, Phys. Rev. B 64 (2001), p. 184421.
25. D.V. Efremov and D.I. Khomskii, Orbital ordering in manganites in the band approach, Phys. Rev. B 72 (2005), p. 012402.
26. J.D. Fuhr, M. Avignon, and B. Alascio, Pressure-induced insulator-metal transition in LaMnO3: A slave-boson approach, Phys. Rev. Lett. 100 (2008), p. 216402.
27. N.E. Hussey, K. Takenaka, and H. Takagi, Universality of the Mott-Ioffe-Regel limit in metals, Philos. Mag. 84 (2004), pp. 2847-2864.
28. N.W. Ashcroft and N.D. Mermin, Solid State Physics, Brooks/Cole, Thomson, Singapore, 1976.
29. 1-xSrxMnO3 compounds, J. Phys.: Condens. Matter 15 (2003), pp. 7763-7776.