Thallium alloys of the rare earth: Sm?TI Phase diagram and molar volumes of the rare earth thallides

1983 ◽  
Vol 503 (8) ◽  
pp. 184-192 ◽  
Author(s):  
S. Delfino ◽  
A. Saccone ◽  
G. Borzone ◽  
R. Ferro
Keyword(s):  
Phase Diagram ◽  
Rare Earth ◽  
Molar Volumes ◽  
Thallium Alloys ◽  
The Rare Earth

Hydrogen Ordering and Metal-Semiconductor Transitions in Rare-Earth Hydrides

2008 ◽  
Vol 1122 ◽  
Author(s):  
P. Vajda
Keyword(s):  
Phase Diagram ◽  
Solid Solution ◽  
Magnetic Properties ◽  
Electronic Structure ◽  
Rare Earth ◽  
Fluorite Type ◽  
The Rare Earth

AbstractAfter an introduction to the rare earth – hydrogen phase diagram, stressing the often broad existence range of the solid solution (α), dihydride (β) and trihydride (γ) phases, we are describing in detail the fluorite-type dihydride and its superstoichiometric composition, RH2+x, where the x atoms occupy the available octahedral interstitial sites. It is shown how these additional x atoms interact with each other to form ordered H superlattices (sometimes distorting the cubic CaF2 structure) and how the latter influences the electronic structure of the systems modifying the magnetic properties and/or leading to metal-semiconductor transitions.

Elastic properties and phase diagram of the rare-earth monopnictide TbSb

2003 ◽  
Vol 68 (14) ◽  
Author(s):  
Yoshiki Nakanishi ◽  
Takuo Sakon ◽  
Mitsuhiro Motokawa ◽  
Michiaki Ozawa ◽  
Takashi Suzuki ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Rare Earth ◽  
Elastic Properties ◽  
The Rare Earth

scholarly journals LOW TEMPERATURE PHASE OF THE RARE-EARTH-FREE MnBi MAGNETIC MATERIAL

2018 ◽  
Vol 54 (1A) ◽  
pp. 50
Author(s):  
Nguyen Van Vuong
Keyword(s):  
Magnetic Material ◽  
Phase Diagram ◽  
Rare Earth ◽  
Low Temperature ◽  
Temperature Gradient ◽  
Diffusion Mechanism ◽  
Time Dependent ◽  
Temperature Phase ◽  
Low Temperature Phase ◽  
The Rare Earth

The Low Temperature Phase (LTP) content determines the spontaneous magnetization Ms of the rare-earth-free hard magnetic material MnBi. LTP in MnBi samples alloyed by the arc-melting is timely developed when they are annealed at the annealing temperatures Ta < 340 oC. Because of the complexity of the phase diagram of MnxBi(100-x) system, the content hardly reaches the value of 100 wt%. Based on the phase diagram of MnxBi(100-x) system, the upper limit * was calculated and 59.8 wt% is the highest content which can be reached when the alloy is isothermally annealed for a long time. The time-dependent behavior of (t) reveals that the LTP is formed from Mn and Bi phases by the diffusion mechanism. The time-dependent diffusion equation has been used to investigate the diffusion process between Mn and Bi in order to form the LTP. The comparison between the theoretical and experimental data allowed to estimate the mutual diffusion coefficient D 510-12 cm2/s. This small value of D is suggested due to not only the low value of Ta necessary for forming LTP but the high surface tension of Bi melted at Ta as well. The calculated results showed that the size distribution of Mn grains embedded in the Bi matrix affected the dependence (t), enhancing and inhibiting in the samples annealed for short and long times, respectively. To increase over *, the anneal at Ta superimposed by the small temperature gradient of 2 oC/cm has been performed. This temperature-gradient driven annealing technique helped to overcome * and reach the value of 83 wt% which corresponds to the Ms = 60 emu/g measured at the field strength of 4 Tesla.

Flame spectra of the rare-earth elements*

1962 ◽  
Vol 18 (4) ◽  
pp. 1127-1153
Author(s):  
V FASSEL ◽  
R CURRY ◽  
R KNISELEY
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
The Rare Earth
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