Neodymium tantalate explained

Neodymium tantalate is an inorganic compound with the chemical formula NdTaO₄. It is prepared by reacting neodymium oxide and tantalum pentoxide at 1200 °C.^[1] It reacts with a mixture of tantalum pentoxide and chlorine gas at high temperature to obtain Nd₂Ta₂O₇Cl₂.^[2] It is ammonolyzed at high temperature to obtain oxynitrides of Nd-Ta.^[3]

Properties

Neodymium tantalate forms violet crystals of the monoclinic system, with space group I 2/a, cell parameters a = 0.55153 nm, b = 1.12388 nm, c = 0.51184 nm, β = 95.731°, Z = 4.^[4]

There is a metastable high-pressure phase of the monoclinic system, space group P 21/c, cell parameters a = 0.75920 nm, b = 0.54673 nm, c = 0.77022 nm, β = 100.032°, Z = 4.^[5]

Neodymium tantalate is insoluble in water.

See also

• Neodymium
• Tantalum
• Tantalate

External links

• Patrick N. Walsh, Harold W. Goldstein, David White . May 1960 . Vaporization of Rare-Earth Oxides . Journal of the American Ceramic Society . en . 43 . 5 . 229–233 . 10.1111/j.1151-2916.1960.tb14589.x . 0002-7820 . 2021-06-06.

Notes and References

1. Krylov, E. I.; Strelina, M. M. Praseodymium and neodymium orthotantalates. Zhurnal Neorganicheskoi Khimii, 1961. 6: 235-235. .
2. U. Schaffrath, R. Gruehn . 1988-12-01 . Nd7,33Ta8O28CI6 — ein Zwischenprodukt des thermischen Abbaus von Nd2Ta2O7Cl2: Präparation, Struktur und magnetische Eigenschaften / Nd_7,33Ta₈O₂₈Cl₆ — an Intermediate Product of the Thermal Decomposition of Nd2Ta2O7Cl2: Preparation, Crystal Structure and Magnetic Properties . Zeitschrift für Naturforschung B . 43 . 12 . 1567–1574 . 10.1515/znb-1988-1208 . 98811409 . 1865-7117 . free .
3. Pascal Maillard, Franck Tessier, Emmanuelle Orhan, François Cheviré, Roger Marchand . January 2005 . Thermal Ammonolysis Study of the Rare-Earth Tantalates RTaO 4 . Chemistry of Materials . en . 17 . 1 . 152–156 . 10.1021/cm040131p . 95148003 . 0897-4756 . 2021-06-06.
4. Kaijie Ning, Qingli Zhang, Deming Zhang, Jintai Fan, Dunlu Sun, Xiaofei Wang, Yin Hang . Journal of Crystal Growth. Journal of Crystal Growth . 2014 . 2014 . 388 . 83–86 . 10.1016/j.jcrysgro.2013.10.030 . 2014JCrGr.388...83N. free.
5. Titov Yu. A., Sych A. M., Sokolov A. N., Kapshuk A. A., Markiv V. Ya., Belyavina N. M. . Crystal structure of the high-pressure modification of NdTaO . Journal of alloys and compounds . 2000 . 2000 . 311 . 2. 252–255 . https://web.archive.org/web/20140812205242/http://cat.inist.fr/?aModele=afficheN&cpsidt=1506065 . 2014-08-12 .