Dysprosium crystal structure

Glowiak, T., Legendziewicz, I., Dao, C.N., and Huskowska, E. (1991) Absorption, luminescence and crystal structure studies of dysprosium compound with L-a-Alanine [Dy(L-a-AlaH)(H20)6]Q3. Journal of the Less Common Metals, 168 (2), 237-248. 

Herrmann, W.A., Anwander, R., Kleine, M., and Scherer, W. (1992) Lanthanides complexes. 1. Solvent free alkoxide complexes of neodymium and dysprosium. Crystal and molecular structure of trans-bis(acetonitrile)tris(tri-tert-butylmethoxy)neodymium. Chemische Berichte, 125, 1971-1979. 

Figure 10.4.5 Single Crystal Structure of a Dysprosium(III) Texaphyrin Complex Wherein Two Phenyl Phosphate Counter Anions are Found Bound to the Metal Center.

The materials derived from YBa2Cu307 by replacing yttrium with other rare earth elements (lutetium, ytterbium, thulium, erbium, hohnium, dysprosium, gadolinium, europium, samarium, neodymium, lanthanum) are also superconductors, with r, s of 88 to 96 K. The crystal structures of RBa2Cu307 are almost the same as those of YBa2Cu307. The lattice constant is slightly different for the different ionic radii of the rare earth elements, and yet their chemical and physical properties are almost the same as those of YBa2Cu307. 

It can only be concluded, from the impact data tabulated in table 8.7, that all the rare earth metals have low fracture toughness in the as-cast condition. Although neodymium, holmium, and ytterbium have somewhat better impact properties than the other rare earth metals this is not explained by purity or crystal structure. Furthermore, the three metals (yttrium, dysprosium and erbium) tested at 477 K did not exhibit a strong tendency towards improved impact properties with increased test temperature. 

Lin J, Su Q, Wang S, Zhang H (1996) Influence of crystal structure on the luminescence properties of bismuth(III), europium(III) and dysprosium(III) in Y2Si05. J Mater Chem 6 265... 

Chatterjee and Taylor (1972) examined physical properties associated with different crystal structures in the neodymium-dysprosium alloy system. The purity of their starting metals was not reported. Alloys were prepared by arc melting the... 

The crystal structure of the rare earth oxyorthosUicates has been determined from single crystals prepared using Bi203 as a flux material (Buisson and Michel, 1968). The oxyorthosilicates from praseodymium to terbium are isomorphic and crystallize in the monocUnic space group P2 /c with Z = 4. According to Ananeva et al. (1981) dysprosium can also have this structure type (A) too, but more often has another structure type (B). It is not clear whether or not lanthanum has a structure of its own. The unit cell dimensions of lanthanide oxyorthosilicates, except those of cerium and promethium compounds, are presented in table 9. 

MgjR2(8104)3. This cubic garnet structure is stable only for smaller rare earths (Ho Lu, Y). The crystals prepared by Ito were too small for single crystal studies and therefore the exact structure is unknown. Andreev et al. (1975) have reported on triclinic Ca3R2SigOig (R = Er Lu) compounds but their exact structure is unknown. Ansell and Wanklyn (1975) have determined the crystal structure of monoclinic Er4PbSi40i7, which contains both Si30f,7 and 81201 groups. The erbium atoms are 6-coordinated. A similar structure has been found for dysprosium and yttrium (Wanklyn et al., 1975). 

The crystal structure of CpsDy-THF, obtained by the usual method from DyCh and NaCp in THF at room temperature, shows that the complex is isostructural with the analogous compounds of La, Pr, Nd, Gd. The THF molecule is coordinated to the dysprosium atom at a Dy-0 distance of 2.522(5) A and the Dy-C(Cp) bond distances range from 2.649(2) to 2.816(9) A (Ye et al. 1990, Maier et al. 1992a, Wu et al. 1994a). 

From a structural standpoint, the rare earth sulfides have several polymorphic forms (20), whose stability regions are represented in Figure 3. The high temperature form (y) exists from lanthanum to dysprosium. It is cubic and is of the Th3P4 type, with a defect structure. In each unit cell, there are 102/3 metal atoms which are distributed at random among the 12 sites of the metal lattice. The structures of the low temperature a and f forms are not yet known. The structure of the 8 form, which is peculiar to dysprosium, yttrium, and erbium, is monoclinic (20). The three last forms have low crystal symmetry, and certainly have no vacant lattices. 

Structure Non-hydrated rare earth fluorides have two different crystal systems, a hexagonal system (lanthanum to terbium) and an orthorhombic system (dysprosium to lutetium, yttrium). In the crystal of LaFs, the central ion is nine coordinated by nine fluoride atoms. Each fluoride atom further connects with two lanthanum atoms through a [13-bridge to form an infinite polymer. 

Khiyalov, M.S., Amiraslanov, I.R., Mamedov, K.S., and Movsumov, E.M. (1981) Crystal and molecular structure of dysprosium(III) p-nitrobenzoate. Doklady —Akademiya Nauk Azerbaidzhanskoi SSR (Proceedings of the National Academy of Sciences Azebaidzhan) (in Russian), 37 (2), 42-45. 

Figure 9,1.12 Single Crystal X-Ray Diffraction Structure of the Dysprosium(III) Texaphyrin Complex 9.74.

Getsis A, Balke B, Felser C et al (2009) Dysprosium-based ionic Uquid crystals thermal, structural, photo- and magnetophysical properties. Cryst Growth Des 9 4429 437... 

In Chapters I and 2, an introduction is made to the synchrotron Mossbauer spectroscopy with examples. Examples include the/ns/tu Mossbauer spectroscopy with synchrotron radiation on thin films and the study of deep-earth minerals. Investigations of in-beam Mossbauer spectroscopy using a Mn beam at the RIKEN RIBF is presented in Chapter 3. This chapter demonstrates innovative experimental setup for online Mossbauer spectroscopy using the thermal neutron capture reaction, Fe (n, y) Fe. The Mossbauer spectroscopy of radionuclides is described in Chapters 4-7. Chapter 4 gives full description of the latest analysis results of lanthanides Eu and Gd) Mossbauer structure and powder X-ray diffraction (XRD) lattice parameter (oq) data of defect fluorite (DF) oxides with the new defect crystal chemistry (DCC) Oq model. Chapter 5 reviews the Np Mossbauer and magnetic study of neptunyl(+l) complexes, while Chapter 6 describes the Mossbauer spectroscopy of organic complexes of europium and dysprosium. Mossbauer spectroscopy is presented in Chapter 7. There are three chapters on spin-state switching/spin-crossover phenomena (Chapter 8-10). Examples in these chapters are mainly on iron compounds, such as iron(lll) porphyrins. The use of Mossbauer spectroscopy of physical properties of Sn(ll) is discussed in Chapter I I. 

---