The Relationship between Thermal Decomposition in Vacuum and the Macrostructure of Alkaline Earth Carbonates

1958 ◽  
Vol 105 (2) ◽  
pp. 89 ◽  
Author(s):  
B. Wolk
Keyword(s):  
Thermal Decomposition ◽  
Alkaline Earth ◽  
The Relationship

Thermal decomposition of alkaline-earth carbonate samples of extreme thickness

1976 ◽  
Vol 16 (3) ◽  
pp. 339-344 ◽  
Author(s):  
S. Gál ◽  
Gy. Pokol ◽  
E. Pungor
Keyword(s):  
Thermal Decomposition ◽  
Alkaline Earth

Nd7,33Ta8O28CI6 — ein Zwischenprodukt des thermischen Abbaus von Nd2Ta2O7Cl2: Präparation, Struktur und magnetische Eigenschaften / Nd7,33Ta8O28Cl6 — an Intermediate Product of the Thermal Decomposition of Nd2Ta2O7Cl2: Preparation, Crystal Structure and Magnetic Properties

1988 ◽  
Vol 43 (12) ◽  
pp. 1567-1574 ◽  
Author(s):  
U. Schaffrath ◽  
R. Gruehn
Keyword(s):  
Crystal Structure ◽  
Thermal Decomposition ◽  
Magnetic Properties ◽  
Calculated Data ◽  
Chemical Transport ◽  
Structure Type ◽  
Magnetic Susceptibilities ◽  
Relationship Of ◽  
The Relationship ◽  
Preparative Route

Abstract Single crystals of the new oxochlorotantalate Nd7.33Ta8O28Cl6, could be obtained only by chemical transport reactions (T2 → T1; T2 - 1000 °C, T, = 900 °C) with mixtures of Cl2/TaCl5 as transport agent. NdTaO4 was chosen as the starting material. A direct preparative route to Nd7.33Ta8O28Cl6 from binary and ternary components, however, was not successful. Nd7.33Ta8O28Cl6 , crystallizes in the space group Cmmm with a = 10.3381(8) Å, b = 18.865(1) Å, c - 3.9152(3) A; Z = 1. The structure was refined to R - 4.42%, R w = 2.76%. Main building units are pairs of edge-sharing TaO6 -octahedra which are connected with threefold capped trigonal prisms around Nd. Especially remarkable is one Nd position with an occupation factor of 0.833. The relationship of this new structure type with Nd2Ta2O7Cl2 is considered. Furthermore, we have measured the magnetic susceptibilities of both Nd-compounds in a temperature range from 3,6 to 251,3 K. The results are compared with calculated data.

Re-clustering of neodymium ions in neodymium, buffer ion-codoped alkaline-earth fluoride transparent ceramics

CrystEngComm ◽  
2017 ◽  
Vol 19 (31) ◽  
pp. 4480-4484 ◽  
Author(s):  
Yiguang Jiang ◽  
Benxue Jiang ◽  
Nan Jiang ◽  
Pande Zhang ◽  
Shuilin Chen ◽  
...  
Keyword(s):  
Optical Properties ◽  
Metal Ions ◽  
Alkaline Earth ◽  
Earth Metal ◽  
Alkaline Earth Metal ◽  
Transparent Ceramics ◽  
Alkaline Earth Metal Ions ◽  
Earth Fluoride ◽  
Alkaline Earth Fluoride ◽  
The Relationship

We systematically present the relationship between the optical properties and deformation of Nd,B-codoped MF2 (B = buffer ions; M = alkaline earth metal ions) transparent ceramics.

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