High-pressure synthesis and neutron diffraction investigation of the crystallographic and magnetic structure of TeNiO3 perovskite

2011 ◽  
Vol 40 (17) ◽  
pp. 4599 ◽  
Author(s):  
M. J. Martínez-Lope ◽  
M. Retuerto ◽  
J. A. Alonso ◽  
J. Sánchez-Benítez ◽  
M. T. Fernández-Díaz
Keyword(s):  
High Pressure ◽  
Neutron Diffraction ◽  
Magnetic Structure ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

High pressure synthesis, crystal, magnetic structure and magnetotransport of SrFe0.5Co0.5O3−δ

2006 ◽  
Vol 179 (11) ◽  
pp. 3365-3370 ◽  
Author(s):  
A. Muñoz ◽  
J.A. Alonso ◽  
M.J. Martínez-Lope ◽  
C. de la Calle ◽  
M.T. Fernández-Díaz
Keyword(s):  
High Pressure ◽  
Magnetic Structure ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

scholarly journals Spin structures and band gap reduction of high-pressure triple perovskite Mn3MnTa2O9

2021 ◽  
Author(s):  
Elena Solana-Madruga ◽  
Clemens Ritter ◽  
Olivier Mentré ◽  
Ángel M. Arévalo-López
Keyword(s):  
High Pressure ◽  
Transition Metal ◽  
Band Gap ◽  
Magnetic Structure ◽  
Perovskite Structure ◽  
Spin Structures ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

The transition-metal-only Mn3MnTa2O9 triple perovskite structure with 1 : 2 B-site order has been prepared by high pressure synthesis. It shows a complex modulated magnetic structure and a 25% band gap reduction from its room pressure polymorph.

High Pressure Synthesis, Crystal, Magnetic Structure and Magnetotransport of SrFe0.5Co0.5O3-δ.

ChemInform ◽  
2007 ◽  
Vol 38 (1) ◽  
Author(s):  
A. Munoz ◽  
J. A. Alonso ◽  
M. J. Martinez-Lope ◽  
C. de la Calle ◽  
M. T. Fernandez-Diaz
Keyword(s):  
High Pressure ◽  
Magnetic Structure ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

High-pressure synthesis and study of the crystal and magnetic structure of the distorted SeNiO3and SeMnO3perovskites

2006 ◽  
pp. 4936-4943 ◽  
Author(s):  
A. Muñoz ◽  
J. A. Alonso ◽  
M. J. Martínez-Lope ◽  
H. Falcón ◽  
M. García-Hernández ◽  
...  
Keyword(s):  
High Pressure ◽  
Magnetic Structure ◽  
High Pressure Synthesis ◽  
Pressure Synthesis ◽  
Crystal And Magnetic Structure

HIGH-PRESSURE SYNTHESIS AND CHARACTERIZATION OF NEW METASTABLE OXIDES

2011 ◽  
Vol 04 (04) ◽  
pp. 333-336 ◽  
Author(s):  
J. A. ALONSO ◽  
M. J. MARTÍNEZ-LOPE ◽  
C. DE LA CALLE ◽  
J. SÁNCHEZ-BENÍTEZ ◽  
M. RETUERTO ◽  
...  
Keyword(s):  
High Pressure ◽  
Neutron Diffraction ◽  
Colossal Magnetoresistance ◽  
Oxygen Stoichiometry ◽  
Synthesis And Characterization ◽  
Elastic Neutron ◽  
High Pressure Synthesis ◽  
Valence States ◽  
Pressure Synthesis

Many transition-metal oxides in elevated valence states [e.g. Mn(V), Co(IV), Ni(III), Cu(III) ] present a metastable character and, given the difficulty of their synthesis, have been relatively little studied. However, they are very interesting materials presenting strong electronic correlations that are bound to exotic properties such as superconductivity, metal behavior, metal–insulator transitions or colossal magnetoresistance. The metastability of these compounds requires special synthesis conditions such as the application of high pressure. In the last years, we have prepared and investigated a good number of materials belonging to several families such as RNiO3 (R = rare earths), Ba3Mn2O8 , (Ba,Sr)CoO3 , La2(Ni,Co)O4+δ , etc. In the study and correct characterization of these oxides it has been decisive the use of elastic neutron diffraction, most of the times in powder samples. This technique has allowed us to access the structural details typically related to the octahedral tilting in perovskite structures, the oxygen stoichiometry and order–disorder of the oxygen sublattice, the distinction between close elements in the Periodic Table, the resolution of magnetic structures and, in general, the establishment of a correlation between the structure and the properties of interest. This letter is organized around the binomial "high-pressure synthesis" and "characterization by neutron diffraction" and illustrated with some selected examples among the metastable materials above mentioned.

scholarly journals High-pressure synthesis of Ba2RhO4 , a rhodate analog of the layered perovskite Sr-ruthenate

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
I. Kurata ◽  
José A. Flores-Livas ◽  
H. Sugimoto ◽  
H. Takahashi ◽  
H. Sagayama ◽  
...  
Keyword(s):  
High Pressure ◽  
Layered Perovskite ◽  
High Pressure Synthesis ◽  
Pressure Synthesis

An effective method for elimination of the defects in diamond caused by physical field asymmetry in high-pressure synthesis cavities

CrystEngComm ◽  
2020 ◽  
Vol 22 (47) ◽  
pp. 8266-8273
Author(s):  
Chunxiao Wang ◽  
Hong-an Ma ◽  
Liangchao Chen ◽  
Shuai Fang ◽  
Jian Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Physical Field ◽  
Diamond Growth ◽  
High Pressure Synthesis ◽  
Growth Defects ◽  
Pressure Synthesis

FEM was used to explain the mechanism of diamond growth defects and methods were proposed to eliminate the growth defects.

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