Metal-carbon nanocomposites FeNi/C: production, phase composition, magnetic properties

Author(s):  
D.G. Muratov ◽  
◽  
A.A. Vasilev ◽  
M.N. Efimov ◽  
G.P. Karpacheva ◽  
...  
2019 ◽  
Vol 10 (3) ◽  
pp. 666-672 ◽  
Author(s):  
D. G. Muratov ◽  
A. A. Vasilev ◽  
M. N. Efimov ◽  
G. P. Karpacheva ◽  
E. L. Dzidziguri ◽  
...  

Nukleonika ◽  
2015 ◽  
Vol 60 (1) ◽  
pp. 29-33
Author(s):  
Mariusz Hasiak

Abstract The microstructure and magnetic properties of nanocomposite hard magnetic Nd-Fe-B-(Re, Ti) materials with different Nd and Fe contents are studied. The role of Re and Ti addition in phase composition and volume fraction of the Nd-Fe-B phase is determined. All samples are annealed at the same temperature of 993 K for 10 min. Mössbauer spectroscopy shows that the addition of 4 at.% of Re to the Nd8Fe78B14 alloy leads to creation of an ineligible amount of the magnetically hard Nd2Fe14B phase. Moreover, the microstructure and magnetic characteristics recorded in a wide range of temperatures for the Nd8Fe79−xB13Mx (x = 4; M = Re or Ti) alloys are also analyzed.


2018 ◽  
Vol 2018 (4) ◽  
pp. 354-358 ◽  
Author(s):  
A. G. Savchenko ◽  
V. P. Menushenkov ◽  
A. Yu. Plastinin ◽  
I. V. Shchetinin ◽  
A. I. Rafal’skii ◽  
...  

2019 ◽  
pp. 217-228
Author(s):  
Vladimir I. Kodolov ◽  
V. V. Trineeva ◽  
N. S. Terebova ◽  
I. N. Shabanova ◽  
T. M. Makhneva ◽  
...  

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1189 ◽  
Author(s):  
Andrei Egorin ◽  
Eduard Tokar ◽  
Anastasia Kalashnikova ◽  
Tatiana Sokolnitskaya ◽  
Ivan Tkachenko ◽  
...  

The article describes the synthesis of composite sorbents by immobilizing iron oxide in a polymer matrix with subsequent hydrothermal treatment at a temperature of 175 °C. The sorbents based on magnetite and hematite were synthesized, their magnetic properties and phase composition were evaluated, and the iron content was determined. Sorption characteristics of the composites towards microconcentrations of Sr-90 radionuclide in solutions with different mineralization and pH were investigated. It was shown that the sorbent based on magnetite was the most efficient. In alkaline media with pH above 11, the composite sorbent based on magnetite exhibited increased selectivity towards Sr-90 and proved to be suitable for application under dynamic sorption conditions with subsequent desorption of the radionuclide with a solution of HNO3.


2019 ◽  
Vol 171 ◽  
pp. 31-39 ◽  
Author(s):  
Chanwon Jung ◽  
Ku Kang ◽  
Amalraj Marshal ◽  
Konda Gokuldoss Pradeep ◽  
Jae-Bok Seol ◽  
...  

2008 ◽  
Vol 368-372 ◽  
pp. 610-612 ◽  
Author(s):  
M. Honarvar Nazari ◽  
Abolghasem Ataie ◽  
S.A. Seyyed Ebrahimi

Nano-crystalline barium hexaferrite powders have been prepared by mechanical alloying of nFe2O3+Ba(CH3COO)2 with Fe/Ba molar ratios of 10-12 and subsequent heat treatment. Thermal behavior, phase composition, morphology and magnetic properties of samples were studied using DTA/TGA, XRD, SEM and VSM, respectively. Nano-crystalline Ba-hexaferrite with a mean crystallite size of 46 nm and magnetic properties as high as Ms = 73.9 A.m2/kg and Hci = 334.2 kA/m was formed for mixture of 5.5Fe2O3+Ba(CH3COO)2 which was milled for 48 h and then annealed at 1100 °C.


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