Crystal structure and magnetic properties of Ba10(MnFeF11–xClx)3FxCl2 –x(x= 0.85). Structural relationships with the apatite-type structure

1996 ◽  
Vol 6 (11) ◽  
pp. 1781-1784 ◽  
Author(s):  
Jacques Darriet ◽  
Virginie Nazabal ◽  
Jean Fompeyrine
2021 ◽  
Vol 2103 (1) ◽  
pp. 012196
Author(s):  
G A Politova ◽  
M A Ganin ◽  
A B Mikhailova ◽  
D A Morozov ◽  
K E Pankov ◽  
...  

Abstract Polycrystalline TbxDy1-xR0.1Fe2-zCoz (R = Nd, Pr, x = 0.2, 0.3; z = 0, 1.3) cubic Laves phase alloys with MgCu2-type structure were prepared by arc melting followed by homogenizing annealing. The crystal structure, magnetic properties, and magnetostriction have been investigated. Compounds with high values of magnetostrictive susceptibility were found in the temperature range 150-300 K. Compounds with partial substitution of cobalt for iron demonstrate a change in the sign of anisotropic magnetostriction. This work continues the search for magnetostrictive materials with inexpensive neodymium and praseodymium.


2017 ◽  
Vol 63 ◽  
pp. 16-22 ◽  
Author(s):  
Sergey M. Aksenov ◽  
Vladimir S. Mironov ◽  
Elena Yu. Borovikova ◽  
Natalia A. Yamnova ◽  
Olga A. Gurbanova ◽  
...  

2002 ◽  
Vol 17 (4) ◽  
pp. 281-286 ◽  
Author(s):  
Isabel Pajares ◽  
Ángeles G. De la Torre ◽  
Sagrario Martínez-Ramírez ◽  
Francisca Puertas ◽  
María-Teresa Blanco-Varela ◽  
...  

Fluorellestadite, Ca10(SiO4)3(SO4)3F2, has been synthesized as single phase. This compound crystallizes in the apatite type structure, s.g. P63/m, with parameters a=9.4417(1) Å, c=6.9396(1) Å and V=535.76(1) Å3. The refinement of its crystal structure converged to RWP=12.33% and RF=4.58%. The atomic parameters have been used to analyze the phase content of mineralized white Portland clinkers. These clinkers contain Ca3SiO5, Ca2SiO4, Ca12Al14O32F2 and Ca10(SiO4)3(SO4)3F2. The agreement between the elemental composition inferred from the Rietveld phase analysis and that measured by XRF is noteworthy. This comparison does not take into account the presence of amorphous phases and unmodeled elemental substitutions in crystalline phases. Similar Rietveld studies on commercial white Portland clinkers are also shown to be feasible.


ChemInform ◽  
2014 ◽  
Vol 45 (5) ◽  
pp. no-no
Author(s):  
A. V. Morozkin ◽  
A. V. Knotko ◽  
V. O. Yapaskurt ◽  
Fang Yuan ◽  
Y. Mozharivskyj ◽  
...  

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