Magnetic State of Y3Fe5-XScxO12 Garnets

2010 ◽  
Vol 168-169 ◽  
pp. 477-480
Author(s):  
Y.G. Chukalkin ◽  
A.E. Teplykh
Keyword(s):  
Crystal Structure ◽  
High Field ◽  
Magnetic State ◽  
Dynamic Susceptibility ◽  
Spin Structures ◽  
Magnetic Methods ◽  
Temperature Dependences ◽  
High Concentrations ◽  
Ferrimagnetic Structure ◽  
Abnormal Temperature

Ferrogarnets of the system {Y3}[Fe2-xScx](Fe3)O12 were investigated by neutron diffraction and magnetic methods. Parameters of crystal structure were refined. It was found that deviations from a collinear ferrimagnetic structure emerged at x ~ 0.7. At high concentrations of Sc a growth of the high-field magnetic susceptibility and an abnormal temperature dependences of dynamic susceptibility typical of local angular spin structures were revealed. The fracture temperatures for the local angular structures were determined.

FEATURES OF THE MAGNETIC STATE IN AMORPHOUS RE–TM AND RE–TM–B MAGNETS (review)

2021 ◽  
pp. 43-58
Author(s):  
R.B. Morgunov ◽  
◽  
D.V. Korolev ◽  
R.A. Valeev ◽  
V.P. Piskorskiy ◽  
...  
Keyword(s):  
Rare Earth ◽  
Amorphous Alloys ◽  
Magnetic State ◽  
Rare Earth Metals ◽  
Earth Metal ◽  
Spin Reorientation ◽  
Heavy Rare Earth ◽  
Temperature Dependences ◽  
Magnetic States ◽  
Amorphous Magnets

Provides an overview of the magnetism features of amorphous magnets of the RE–TM and RE–TM–B alloys (RE – rare earth metal, TM – transition metal, B – boron). Magnetic states in amorphous alloys, the effect of the single-ionic anisotropy of heavy rare-earth metals on local disorder and spin frustrations in an amorphous body, and some spin-reorientation transitions observed in such compounds are presented. It is shown that the identification of the spin-glass state can be achieved by detecting specific features on the field and temperature dependences of the magnetic moment and magnetic susceptibility of the sample.

Real crystal structure and magnetic state of Ce2Fe17 compounds

2004 ◽  
Vol 350 (1-3) ◽  
pp. E99-E102 ◽  
Author(s):  
P.A Teplykh ◽  
A.N Pirogov ◽  
A.G Kuchin ◽  
A.E Teplykh
Keyword(s):  
Crystal Structure ◽  
Magnetic State ◽  
Real Crystal

Crystal structure and magnetic state of U2XSi3 (X=Fe, Pt)

2006 ◽  
Vol 408-412 ◽  
pp. 1324-1328 ◽  
Author(s):  
T. Yamamura ◽  
D.X. Li ◽  
K. Yubuta ◽  
Y. Shiokawa
Keyword(s):  
Crystal Structure ◽  
Magnetic State

Crystal Structure and Magnetic State of U2XSi3 (X: Fe, Pt).

ChemInform ◽  
2006 ◽  
Vol 37 (22) ◽  
Author(s):  
T. Yamamura ◽  
D. X. Li ◽  
K. Yubuta ◽  
Y. Shiokawa
Keyword(s):  
Crystal Structure ◽  
Magnetic State

Correlation between Ionic Radius of Substituting Element and Magnetic Properties of Bi1-xAxFeO3-x/2 (A= Ca, Sr, Pb, Ba) Multiferroics

2009 ◽  
Vol 152-153 ◽  
pp. 131-134 ◽  
Author(s):  
V.A. Khomchenko ◽  
Michael Kopcewicz ◽  
Armandina M. Lima Lopes ◽  
Yuri G. Pogorelov ◽  
J.P. Araujo ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Spin Structure ◽  
Ionic Radius ◽  
Oxygen Vacancies ◽  
Magnetic State ◽  
Weak Ferromagnetism ◽  
Host Lattice ◽  
A Site ◽  
Spiral Spin

Investigation of crystal structure and magnetic properties of the diamagnetically- substituted Bi1-xAxFeO3-x/2 (A= Ca, Sr, Pb, Ba; x= 0.2, 0.3) polycrystalline samples has been carried out. It has been shown that the heterovalent A2+ substitution result in the formation of oxygen vacancies in the host lattice. The solid solutions have been found to possess a rhombohedrally distorted perovskite structure described by the space group R3c. Magnetization measurements have shown that the magnetic state of these compounds is determined by the ionic radius of the substituting elements. A-site substitution with the biggest ionic radius ions has been found to suppress the spiral spin structure of BiFeO3 giving rise to the appearance of weak ferromagnetism.

Dielectric properties of (NH4)2SO4 crystals in the range of electronic excitations

2009 ◽  
Vol 16 (2) ◽  
pp. 260-263 ◽  
Author(s):  
B. Andriyevsky ◽  
C. Cobet ◽  
A. Patryn ◽  
N. Esser
Keyword(s):  
Crystal Structure ◽  
Phase Transition ◽  
Dielectric Properties ◽  
Large Temperature ◽  
Electronic Excitations ◽  
Temperature Dependent ◽  
Temperature Changes ◽  
The Real ◽  
Temperature Dependences ◽  
Simultaneous Decrease

Spectra of the real and imaginary parts of the pseudo-dielectric permittivity, 〈∊1〉(E) and 〈∊2〉(E), of ferroelectric ammonium sulfate crystals, (NH4)2SO4, have been measured in the range of electronic excitations 4.0 to 9.5 eV by ellipsometry using synchrotron radiation. Temperature dependences of the corresponding susceptibilities, 〈χ1〉(T) and 〈χ2〉(T), obtained for the photon energy E = 8.5 eV, related to excitations of oxygen p-electrons, reveal sharp peak-like temperature changes near the Curie point T C = 223 K. The large temperature-dependent increase of the imaginary part of the susceptibility χ2(T), together with a simultaneous decrease of the real part of the susceptibility χ1(T), take place at the phase transition. These anomalies have been ascribed mainly to the SO4 group of the crystal structure.

High-field NMR study of vertex rotation in (C5HnMe5-n)MCo2(CO)8CR clusters (M = molybdenum, tungsten): x-ray crystal structure of (C5Me5)MoCo2(CO)8CCO2-iso-Pr

1991 ◽  
Vol 10 (7) ◽  
pp. 2362-2370 ◽  
Author(s):  
Karen A. Sutin ◽  
Lijuan. Li ◽  
Christopher S. Frampton ◽  
Brian G. Sayer ◽  
Michael J. McGlinchey
Keyword(s):  
Crystal Structure ◽  
High Field ◽  
X Ray ◽  
Nmr Study
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