RT Journal Article
T1 Review: Metastable materials accessed under moderate pressure conditions (P <= 3.5 GPa) in a piston-Cylinder press
A1 Gainza, Javier
A1 Serrano Sáánchez, Federico
A1 Rodrigues, Joao Elias F. S.
A1 Nemes, Norbert Marcel
A1 Martínez, José Luis
A1 Alonso, José Antonio
AB In this review, we describe different families of metastable materials, some of them with relevant technological applications, which can be stabilized at moderate pressures 2-3.5 GPa in a piston-cylinder press. The synthesis of some of these systems had been previously reported under higher hydrostatic pressures (6-10 GPa), but can be accessed under milder conditions in combination with reactive precursors prepared by soft-chemistry techniques. These systems include perovskites with transition metals in unusual oxidation states (e.g., RNiO_(3) with Ni^(3+), R = rare earths); double perovskites such as RCu_(3)Mn_(4)O_(12) with Jahn-Teller Cu^(2+) ions at A sites, pyrochlores derived from Tl_(2)Mn_(2)O_(7) with colossal magnetoresistance, pnictide skutterudites M_(x)Co_(4)Sb_(12) (M = La, Yb, Ce, Sr, K) with thermoelectric properties, or metal hydrides Mg_(2)MH_(x) (M = Fe, Co, Ni) and AM_(g)H_(3) (A: alkali metals) with applications in hydrogen storage. The availability of substantial amounts of sample (0.5-1.5 g) allows a complete characterization of the properties of interest, including magnetic, transport, thermoelectric properties and so on, and the structural characterization by neutron or synchrotron X-ray diffraction techniques.
PB MDPI AG
SN 1996-1944
YR 2021
FD 2021-04
LK https://hdl.handle.net/20.500.14352/7390
UL https://hdl.handle.net/20.500.14352/7390
LA eng
NO © 2021 by the authors. Licensee MDPIThis research was funded by the Spanish Ministry of Science, Innovation, and Universities for funding the project number: MAT2017-84496-R.
NO Ministerio de Economía y Competitividad (MINECO)/ FEDER
DS Docta Complutense
RD 8 may 2024