INVESTIGADORES
MASSA Nestor Emilio
artículos
Título:
Evolution of Ni Local Structure in NdNiO3 Perovskite Across the Metal-InsulatorTransition
Autor/es:
C. PIAMONTEZE1, H. C. N. TOLENTINO, A.Y. RAMOS, N. E. MASSA, J. A. ALONSO, M. J. MARTINEZ-LOPE AND M. T. CASAIS
Revista:
PHYSICA SCRIPTA
Editorial:
Institute of Physics (IOP)
Referencias:
Lugar: New York; Año: 2005 vol. T115 p. 648 - 650
ISSN:
0281-1847
Resumen:
NdNiO3 presents a metal-insulator (MI) transition at 200K with decreasing temperature.
This system was characterized by neutron diffraction as orthorhombic
with a very symmetric Ni site and almost no modification at the NiO6 octahedra is
observed across the transition.We carried out EXAFS measurements on NdNiO3
observed across the transition.We carried out EXAFS measurements on NdNiO3
observed across the transition.We carried out EXAFS measurements on NdNiO3
This system was characterized by neutron diffraction as orthorhombic
with a very symmetric Ni site and almost no modification at the NiO6 octahedra is
observed across the transition.We carried out EXAFS measurements on NdNiO3
observed across the transition.We carried out EXAFS measurements on NdNiO3
observed across the transition.We carried out EXAFS measurements on NdNiO3
This system was characterized by neutron diffraction as orthorhombic
with a very symmetric Ni site and almost no modification at the NiO6 octahedra is
observed across the transition.We carried out EXAFS measurements on NdNiO3
observed across the transition.We carried out EXAFS measurements on NdNiO3
observed across the transition.We carried out EXAFS measurements on NdNiO3
3 presents a metal-insulator (MI) transition at 200K with decreasing temperature.
This system was characterized by neutron diffraction as orthorhombic
with a very symmetric Ni site and almost no modification at the NiO6 octahedra is
observed across the transition.We carried out EXAFS measurements on NdNiO3
observed across the transition.We carried out EXAFS measurements on NdNiO3
observed across the transition.We carried out EXAFS measurements on NdNiO3
6 octahedra is
observed across the transition.We carried out EXAFS measurements on NdNiO33
from room temperature down to 10 K, crossing the MI transition and observed
important local modifications at the Ni site. The phase derivative method shows
that there are distorted Ni sites, with at least two different Ni-O distances, along
all the temperature range measured. The modification across the MI transition
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
important local modifications at the Ni site. The phase derivative method shows
that there are distorted Ni sites, with at least two different Ni-O distances, along
all the temperature range measured. The modification across the MI transition
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
important local modifications at the Ni site. The phase derivative method shows
that there are distorted Ni sites, with at least two different Ni-O distances, along
all the temperature range measured. The modification across the MI transition
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
MI transition and observed
important local modifications at the Ni site. The phase derivative method shows
that there are distorted Ni sites, with at least two different Ni-O distances, along
all the temperature range measured. The modification across the MI transition
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
MI transition
concerns the increasing of the distorted phase. This hypothesis is sustained by
the behavior of the Debye-Waller factor (2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
2) with temperature. With decreasing
temperature, when the sample is around TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.
TMI 2 rapidly increases due to the
growing amount of distorted sites. These results give basis for a discussion in
terms of a percolative transition.