scholarly journals Optical, Dielectric and Magnetic Properties of La1-xNdxFeO3 Powders and Ceramics

Author(s):  
Paweł Głuchowski ◽  
Karen Oganisian ◽  
Robert Tomala ◽  
Anna Łukowiak ◽  
Dmitry Karpinsky ◽  
...  

Nanocrystalline La1-xNdxFeO3 powders with different concentrations of Nd3+ have been synthesized by modified Pechini method. Their structure was studied by X-ray powder diffraction (XRD). Further, La1-xNdxFeO3 nanoceramics were prepared by high pressure sintering technique. The luminescence spectra of the powders were investigated as a function of concentration of active dopant to check the possible energy transfers observed due to Nd3+ concentration changes. The electrical and magnetic properties of the powders and ceramics were investigated to determine the effect of Nd3+ doping on the dielectric permittivity and magnetization in the wide frequency range.

Ceramics ◽  
2018 ◽  
Vol 2 (1) ◽  
pp. 1-12 ◽  
Author(s):  
Paweł Głuchowski ◽  
Karen Oganisian ◽  
Robert Tomala ◽  
Anna Łukowiak ◽  
Dmitry Karpinsky ◽  
...  

Nanocrystalline La1−xNdxFeO3 powders with different concentrations of Nd3+ have been synthesized using a modified Pechini method. Their structures were studied by X-ray powder diffraction (XRD). Furthermore, La1−xNdxFeO3 nanoceramics were prepared using a high pressure sintering technique. The luminescence spectra of the powders were investigated as a function of concentration of active dopant to check the possible energy transfers observed due to Nd3+ concentration changes. The electrical and magnetic properties of the powders and ceramics were investigated to determine the effect of Nd3+ doping on the dielectric permittivity and magnetization in the wide frequency range.


2017 ◽  
Vol 29 (2) ◽  
pp. 1542-1553 ◽  
Author(s):  
Worawat Wattanathana ◽  
Worawut Nantharak ◽  
Suttipong Wannapaiboon ◽  
Pongsakorn Jantaratana ◽  
Chatchai Veranitisagul ◽  
...  

Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.


2018 ◽  
Vol 44 (7) ◽  
pp. 595-598 ◽  
Author(s):  
V. V. Balashev ◽  
K. S. Ermakov ◽  
L. A. Chebotkevich ◽  
V. V. Korobtsov

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