scholarly journals Comments on intermetallic thermochemistry

2002 ◽  
Vol 38 (3-4) ◽  
pp. 249-272 ◽  
Author(s):  
G. Borzone ◽  
R. Raggio ◽  
R. Ferro
Keyword(s):  
Rare Earth ◽  
Enthalpy Of Formation ◽  
Rare Earth Alloys ◽  
Alloy Thermodynamics ◽  
The Enthalpy Of Formation ◽  
The Eu

The need of a concerted multi-disciplinary approach in the investigation of intermetallic systems and the role of thermochemistry are underlined. The activity carried out in the Author?s laboratory in the alloy thermodynamics is summarized. The different instruments (calorimeters) built in laboratory are briefly presented and their performance discussed. The results obtained in the measurement of the enthalpy of formation mainly of several rare earth alloys are described. The characteristics of the Eu and Yb thermochemistry and crystallochemistry are finally underlined.

scholarly journals A comparison of methods for the estimation of the enthalpy of formation of rare earth compounds

2021 ◽  
Author(s):  
Sergio Sanchez-Segado ◽  
Sebastien Lectez ◽  
Animesh Jha ◽  
Stephen Stackhouse
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Enthalpy Of Formation ◽  
Comparison Of Methods ◽  
Rare Earth Compounds ◽  
The Enthalpy Of Formation ◽  
Global Transition ◽  
The Way

Rare earth elements are helping drive the global transition towards a greener economy. However, the way in which they are produced is far from being considered green. One of the...

On the Kondo effect in rare-earth alloys: Role of the crystal field

1973 ◽  
Vol 43 (3) ◽  
pp. 234-236 ◽  
Author(s):  
E. Borchi ◽  
S. De Gennaro
Keyword(s):  
Rare Earth ◽  
Crystal Field ◽  
Kondo Effect ◽  
Rare Earth Alloys

Role of Solute in the Texture Modification During Hot Deformation of Mg-Rare Earth Alloys

2011 ◽  
Vol 43 (4) ◽  
pp. 1347-1362 ◽  
Author(s):  
Jason P. Hadorn ◽  
Kerstin Hantzsche ◽  
Sangbong Yi ◽  
Jan Bohlen ◽  
Dietmar Letzig ◽  
...  
Keyword(s):  
Rare Earth ◽  
Hot Deformation ◽  
Rare Earth Alloys ◽  
Texture Modification

scholarly journals Role of critical spin fluctuations in ultrafast demagnetization of transition-metal rare-earth alloys

2013 ◽  
Vol 87 (21) ◽  
Author(s):  
V. López-Flores ◽  
N. Bergeard ◽  
V. Halté ◽  
C. Stamm ◽  
N. Pontius ◽  
...  
Keyword(s):  
Rare Earth ◽  
Transition Metal ◽  
Spin Fluctuations ◽  
Rare Earth Alloys ◽  
Ultrafast Demagnetization

Enthalpy of Formation of Rare-earth Silicates Y2SiO5 and Yb2SiO5 and N-containing Silicate Y10(SiO4)6N2

1999 ◽  
Vol 14 (4) ◽  
pp. 1181-1185 ◽  
Author(s):  
Jian-Jie Liang ◽  
Alexandra Navrotsky ◽  
Thomas Ludwig ◽  
Hans J. Seifert ◽  
Fritz Aldinger
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Enthalpy Of Formation ◽  
Temperature Drop ◽  
Solution Calorimetry ◽  
Enthalpies Of Formation ◽  
Binary Oxides ◽  
Standard Enthalpies Of Formation ◽  
Oxygen Gas ◽  
The Enthalpy Of Formation

The enthalpies of formation of two rare-earth silicates (Y2SiO5 and Yb2SiO5) and a N-containing rare-earth silicate Y10(SiO4)6N2 have been determined using high-temperature drop solution calorimetry. Alkali borate (52 wt% LiBO2·48 wt% NaBO2) solvent was used at 800 °C, and oxygen gas was bubbled through the melt. The nitrogen-containing silicate was oxidized during dissolution. The standard enthalpies of formation are for Y2SiO5, Yb2SiO5, and Y10(SiO4)6N2, respectively, –22868.54 ± 5.34, –22774.75 ± 8.21, and –14145.20 ± 16.48 kJ/mol from elements, and –52.53 ± 4.83, –49.45 6 ± 8.35, and –94.53 ± 11.66 kJ/mol from oxides (Y2O3 or Yb2O3, SiO2) and nitride (Si3N4). The silicates and N-containing silicate are energetically stable with respect to binary oxides and Si3N4, but the N-containing silicate may be metastable with respect to assemblages containing Y2SiO5, Si3N4, and SiO2. A linear relationship was found between the enthalpy of formation of a series of M2SiO5 silicates from binary oxides and the ionic potential (z/r) of the metal cation.

Acoustic properties of rare-earth alloys Tb0.27Dy0.73(Fe1-xMnx)1.9

1994 ◽  
Vol 04 (C5) ◽  
pp. C5-705-C5-708
Author(s):  
V. PREOBRAZHENSKY ◽  
I. DUBENKO ◽  
N. ECONOMOV ◽  
A. ZAIKIN
Keyword(s):  
Rare Earth ◽  
Acoustic Properties ◽  
Rare Earth Alloys
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