Theory of magnetic properties of heavy rare-earth metals: Temperature dependence of magnetization, anisotropy, and resonance energy

1975 ◽  
Vol 11 (1) ◽  
pp. 351-362 ◽  
Author(s):  
Per-Anker Lindgård ◽  
Oluf Danielsen
Keyword(s):  
Magnetic Properties ◽  
Rare Earth ◽  
Temperature Dependence ◽  
Rare Earth Metals ◽  
Resonance Energy ◽  
Heavy Rare Earth

Magnetic susceptibility of liquid heavy rare earth metals

1979 ◽  
Vol 40 (C5) ◽  
pp. C5-260-C5-261 ◽  
Author(s):  
M. Müller ◽  
E. Huber ◽  
H.-J. Güntherodt
Keyword(s):  
Magnetic Susceptibility ◽  
Rare Earth ◽  
Rare Earth Metals ◽  
Heavy Rare Earth

scholarly journals Dipolar Excitations at theLIIIX-Ray Absorption Edges of the Heavy Rare-Earth Metals

2007 ◽  
Vol 99 (24) ◽  
Author(s):  
S. D. Brown ◽  
P. Strange ◽  
L. Bouchenoire ◽  
B. Zarychta ◽  
P. B. J. Thompson ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Metals ◽  
Heavy Rare Earth ◽  
Absorption Edges

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.

scholarly journals Dehydration of Biomass-Derived Butanediols over Rare Earth Zirconate Catalysts

Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1392
Author(s):  
Asami Matsuda ◽  
Yoshitaka Matsumura ◽  
Kazuki Nakazono ◽  
Fumiya Sato ◽  
Ryoji Takahashi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Flow Reactor ◽  
Rare Earth Metals ◽  
Fluorite Structure ◽  
Catalytic Performance ◽  
High Specific Surface Area ◽  
Heavy Rare Earth ◽  
High Crystallinity ◽  
Unsaturated Alcohols ◽  
Selective Formation

The aim of this work is to develop an effective catalyst for the conversion of butanediols, which is derivable from biomass, to valuable chemicals such as unsaturated alcohols. The dehydration of 1,4-, 1,3-, and 2,3-butanediol to form unsaturated alcohols such as 3-buten-1-ol, 2-buten-1-ol, and 3-buten-2-ol was studied in a vapor-phase flow reactor over sixteen rare earth zirconate catalysts at 325 °C. Rare earth zirconates with high crystallinity and high specific surface area were prepared in a hydrothermal treatment of co-precipitated hydroxide. Zirconates with heavy rare earth metals, especially Y2Zr2O7 with an oxygen-defected fluorite structure, showed high catalytic performance of selective dehydration of 1,4-butanediol to 3-buten-1-ol and also of 1,3-butanediol to form 3-buten-2-ol and 2-buten-1-ol, while the zirconate catalysts were less active in the dehydration of 2,3-butanediol. The calcination of Y2Zr2O7 significantly affected the catalytic activity of the dehydration of 1,4-butanediol: a calcination temperature of Y2Zr2O7 at 900 °C or higher was efficient for selective formation of unsaturated alcohols. Y2Zr2O7 with high crystallinity exhibits the highest productivity of 3-buten-1-ol from 1,4-butanediol at 325 °C.

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