Analysis of the magnetic properties of (La1 − x Sr x )0.93MnO3 manganites at high temperatures

2007 ◽  
Vol 52 (9) ◽  
pp. 1058-1061
Author(s):  
O. K. Kuvandikov ◽  
Kh. O. Shakarov ◽  
Z. M. Shodiev ◽  
A. Rustamov
Keyword(s):  
Magnetic Properties ◽  
High Temperatures

Exoplanet Upper Atmosphere Environment Characterization

2011 ◽  
Vol 7 (S282) ◽  
pp. 525-532 ◽  
Author(s):  
Helmut Lammer ◽  
Kristina G. Kislyakova ◽  
Petra Odert ◽  
Martin Leitzinger ◽  
Maxim L. Khodachenko ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Mass Loss ◽  
Radiation Exposure ◽  
High Temperatures ◽  
Stellar Wind ◽  
Numerical Models ◽  
Large Mass ◽  
Upper Atmosphere ◽  
Hot Jupiters ◽  
Atmosphere Environment

AbstractThe intense stellar SXR and EUV radiation exposure at “Hot Jupiters” causes profound responses to their upper atmosphere structures. Thermospheric temperatures can reach several thousands of Kelvins, which result in dissociation of H2 to H and ionization of H to H+. Depending on the density and orbit location of the exoplanet, as a result of these high temperatures the thermosphere expands dynamically up to the Roche lobe, so that geometric blow-off with large mass loss rates and intense interaction with the stellar wind plasma can occur. UV transit observations together with advanced numerical models can be used to gain knowledge on stellar plasma and the planet's magnetic properties, as well as the upper atmosphere.

scholarly journals Magnetic properties of iron at high temperatures

1897 ◽  
Vol 61 (369-377) ◽  
pp. 490-491
Keyword(s):  
Magnetic Properties ◽  
Critical Point ◽  
High Temperatures ◽  
Present Note

The present note is for the purpose of correcting two points in my paper in the 'Philosophical Transactions,' A, vol. 180. First .—I was of opinion that my experiments showed that heating iron above its critical point did not entirely destroy the effects of previous magnetisation. Recent experiments I have made do not confirm this opinion.

scholarly journals The study of crystal and magnetic properties of MnNi0.85Fe0.15Ge

Nukleonika ◽  
2015 ◽  
Vol 60 (1) ◽  
pp. 11-14
Author(s):  
Mieczysław Budzyński ◽  
Viktor I. Valkov ◽  
Alexei V. Golovchan ◽  
Viktor I. Mitsiuk ◽  
Alexandr P. Sivachenko ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Fields ◽  
High Temperatures ◽  
Theoretical Calculations ◽  
Hexagonal Phase ◽  
Hexagonal Structure ◽  
Site Distribution ◽  
Mössbauer Measurements ◽  
Random Site ◽  
Mössbauer Data

Abstract Magnetic and Mössbauer measurements were performed for MnNi0.85Fe0.15Ge. The Mössbauer data indicate that Fe atoms in MnNi0.85Fe0.15Ge are randomly distributed over two types of metal sites in hexagonal structure. At 77 K, the hyperfine magnetic fields at Fe located in different crystal sites have similar values of about 12.7 and 12.3 T. The random site distribution of the iron atoms in the non-magnetic hexagonal phase at high temperatures is confirmed by the theoretical calculations in fully relativistic Korringa –Kohn –Rostoker (KKR) method.

Structural, electrical transport and magnetic properties of the Co-doped La0.5Sr0.5TiO3 at high temperatures

2004 ◽  
Vol 468 (1-2) ◽  
pp. 8-11 ◽  
Author(s):  
P.T. Qiao ◽  
Z.H. Zhao ◽  
Y.G. Zhao ◽  
X.P. Zhang ◽  
W.Y. Zhang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
High Temperatures ◽  
Electrical Transport ◽  
Co Doped

Laser Synthesis of Iron Nitride Nanoparticles from Pyrolysis of Fe(CO)5-NH3 System

1994 ◽  
Vol 368 ◽  
Author(s):  
X. Q. Zhao ◽  
Y. Liang ◽  
F. Zheng ◽  
Z. Q. Hu ◽  
G. B. Zhang ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
High Temperatures ◽  
Vapor Phase ◽  
Low Temperatures ◽  
Iron Nitride ◽  
Laser Synthesis ◽  
Synthesis Parameters ◽  
Structure Morphology

ABSTRACTBy vapor-phase pyrolysis of Fe(CO) 5 and NH3 induced by CW CO2 laser, γ'-Fe4N and ε- Fe3N nanoparticles(≤35nm) were prepared in Ar and N2 atmospheres. In Ar, γ'-Fe4N accompanied by a little α-Fe was formed at low temperatures below 650°C, while higher temperatures favored the formation of γ-Fe. In N2 atmospheres, a mixture of Fe4N and Fe3N nanoparticles were obtained at high temperatures. In addition, the influences of synthesis parameters on the structure, morphology and magnetic properties of the nanoparticles were discussed.

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