Ambient pressure magnetic properties of molecular conductors D[Ni(dmit)2]2 with D = TTF, NMe4 and MHMe3

1991 ◽  
Vol 42 (3) ◽  
pp. 2309
Author(s):  
L. Brossard ◽  
E. Codjovi ◽  
O. Kahn ◽  
L. Valade ◽  
P. Cassoux

1983 ◽  
Vol 44 (C3) ◽  
pp. C3-1001-C3-1005
Author(s):  
S. Iwabuchi ◽  
H. Fukuyama




2011 ◽  
Vol 421 (1) ◽  
pp. 37-42
Author(s):  
T. H. Meen ◽  
H. M. Liu ◽  
C. J. Huang ◽  
T. H. Fang ◽  
L. W. Ji ◽  
...  


Author(s):  
Marc Fourmigué

In this review, we describe solid solutions strategies employed in molecular conductors, where the control of the transport and magnetic properties (metallic or superconducting behavior, metal-insulator transitions, etc) is the...



2018 ◽  
Vol 64 (3) ◽  
pp. 222 ◽  
Author(s):  
Mohamed Abatal

In this research, we report a detailed study of the structural, electrial and magnetic properties of the ruthenium pyrochlore with the composition (Er_2-x Sr_x) Ru_2O_7 0<=x<=0.10 prepared by solid-state reaction in air at ambient pressure.  The synthesized products were characterized using powder X-ray diffraction. The structure of the samples was refined with the Rietveld method, showing that the lattice parameters are more sensitive to the Strontium and Erbium sites. Scanning electron microscopy shows that the crystal size varies between 0.27 and 0.62 mu m. In all polycrystalline samples, the electrical resistance decreases with increasing temperature, indicating that the samples are nonmetallic. The slope of the temperature-dependent resistance profiles systematically decreases with increasing x, proving that the carrier concentration increases with increasing the Sr content. Zero-field-cooled and field cooled magnetization measurements show an irreversible behavior where the split is systematically enhanced by increasing x.



1996 ◽  
Vol 52 (a1) ◽  
pp. C415-C415
Author(s):  
M. T. Duarte ◽  
J. Ayllon ◽  
I. C. Santos ◽  
R. T. Henriques ◽  
M. Almeida


2012 ◽  
Vol 722 ◽  
pp. 53-60
Author(s):  
Ying Bang Yao ◽  
Bei Zhang ◽  
Long Chen ◽  
Yang Yang

Nanoparticles of bismuth ferrite (BiFeO3) were fabricated by high-pressure pulsed laser deposition method (PLD) on Pt-coated Si substrates. Effects of the ambient oxygen pressure during deposition (from 1 Torr to 15 Torr) were studied with respect to the microstructures and magnetic properties of the samples. It was found that as the pressure is higher than 5 Torr isolated nanoparticles are formed and the size of these nanoparticles decreases with the deposition pressure. All the nanoparticles exhibit ferromagnetic behavior and the magnetic coercive filed decreases with the particle size.



2005 ◽  
Vol 2005 (16) ◽  
pp. 3261-3270 ◽  
Author(s):  
Christophe Faulmann ◽  
Stéphane Dorbes ◽  
Bénédicte Garreau de Bonneval ◽  
Gábor Molnár ◽  
Azzedine Bousseksou ◽  
...  


2013 ◽  
Vol 2013 ◽  
pp. 1-6
Author(s):  
Farzad Moradiannejad ◽  
S. Javad Hashemifar ◽  
Hadi Akbarzadeh

The structural, electronic, and magnetic properties of MnAs crystal are studied. The WIEN2k code which uses a full-potential LAPW program based on density functional theory with GGA is used for the calculations. At first, the total energy of a MnAs crystal in different lattices is calculated and the corresponding - diagram is drawn for two different structures of MnAs. The effect of pressuring this crystal is determined. The calculations confirm that, MnAs has the NiAs-type structure at ambient pressure but transforms into the zinc-blend structure of a specific pressure value. Also, the electric field gradient (EFG) and hyperfine field (HFF) at the nuclear site of Mn and As are calculated. Finally, the effect of pressure on EFG and HFF is studied.





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