Zobrazeno 1 - 10
of 520
pro vyhledávání: '"Mato, J M"'
Publikováno v:
Acta Cryst. (2022). B78, 172-178
We revisit the antiferromagnetic structure of $\rm Tb_{14}Ag_{51}$ [P. Fischer., $et\, al$. (2005). PRB, 72 134413] with the propagation vector $[{1\over3},{1\over3},{0}] $ and parent space group $P6/m$ using both magnetic symmetry and irreducible re
Externí odkaz:
http://arxiv.org/abs/2301.06920
Autor:
Perez-Mato, J. M., Campbell, B. J., Garlea, V. O., Damay, F., Aurelio, G., Avdeev, M., Fernández-Díaz, M. T., Henriques, M. S., Khalyavin, D., Lee, S., Pomjakushin, V., Terada, N., Zaharko, O., Campo, J., Fabelo, O., Litvin, D. B., Petricek, V., Rayaprol, S., Rodriguez-Carvajal, J., Von Dreele, R.
Publikováno v:
Acta Crystallographica Section B: Structural Science, Crystal Engineering & Materials; Aug2024, Vol. 80 Issue 4, p219-234, 16p
Akademický článek
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Akademický článek
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Autor:
Gonzalez, Santiago, Perez-Mato, J. M., Elcoro, Luis, Garcia, Alberto, Withers, Ray L., Bourgeois, L.
Publikováno v:
J. Phys.: Condens. Matter 24 495301 (2012)
We propose that systems exhibiting compositional patterning at the nanoscale, so far assumed to be due to some kind of ordered phase segregation, can be understood instead in terms of coherent, single phase ordering of minority motifs, caused by some
Externí odkaz:
http://arxiv.org/abs/1207.2717
Although superspace formalism has become the standard approach for the analysis of structurally modulated crystals, it has remained during the last thirty years almost unexplored as a practical tool to deal with magnetic incommensurate structures. Th
Externí odkaz:
http://arxiv.org/abs/1107.2358
Publikováno v:
Phys. Chem. Chem. Phys., 2011, 13, 12186-12190
Based on density functional theory calculations and group theoretical analysis, we have studied NaLaMnWO$_{6}$ compound which has been recently synthesized [Phys. Rev. B 79, 224428 (2009)] and belongs to the $AA'BB'{\rm O}_{6}$ family of double perov
Externí odkaz:
http://arxiv.org/abs/1104.5099
Autor:
Martin-Olalla, J. M., Romero, F. J., Ramos, S., Gallardo, M. C., Perez-Mato, J. M., Salje, E. K. H.
Publikováno v:
Journal of Physics: Condensed Matter 15(14) 2423-2434 (2003)
The asymptotic behaviour near phase transitions can be suitably characterized by the scaling of $\Delta s/Q^2$ with $\epsilon=1-T/T_c$, where $\Delta s$ is the excess entropy and $Q$ is the order parameter. As $\Delta s$ is obtained by integration of
Externí odkaz:
http://arxiv.org/abs/cond-mat/0301597
First-principles density-functional calculations within the local-density approximation and the pseudopotential approach are used to study and characterize the ferroelastic phase transition in calcium chloride (CaCl_2). In accord with experiment, the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110466
Publikováno v:
Phys. Rev. B.63, 144103 (2001)
We have studied the Devonshire-Landau potential underlying the phase transition sequence of BaTiO3 using the first-principles effective Hamiltonian of Zhong, Vanderbilt, and Rabe [Phys. Rev. Lett. 73, 1861 (1994)], which has been very successful in r
Externí odkaz:
http://arxiv.org/abs/cond-mat/0009430