Search for content and authors
 

Elastic properties of dysprosium orthovanadate: An in-situ powder-diffraction study

Olga Ermakova 1,2Roman Minikayev 1,3Christian Lathe 4,5Hanna Dabkowska 6Wojciech Paszkowicz 1

1. Polish Academy of Sciences, Institute of Physics, al. Lotników 32/46, Warszawa 02-668, Poland
2. Russian Academy of Sciences, Ural Division, Institute of Solid State Chemistry (ISSC), Pervomaiyskay, 91, Ekaterinburg 620219, Russian Federation
3. Sincrotrone Trieste, Strada Statale 14, km 163.5, in AREA Science Park, Trieste 34012, Italy
4. GeoForschungsZentrum Potsdam, (GFZ), Telegrafenberg A17, Potsdam D-14473, Germany
5. HASYLAB at DESY, Notkestr., Hamburg 22607, Germany
6. Department of Physics, McMaster University, Hamilton L8S 4M1, Canada

Abstract

Rare-earth orthovanadates (RVO4) are well known as materials with possible applications mostly as laser materials [1-6]. RVO4(R = Y, Ce-Lu) crystallize in zircon-type structure, I41/amd space group. An irreversible pressure-induced phase transition from zircon to scheelite-type structure occurs for materials of this type in the pressure range of 5-10 GPa [7,8].

During the present investigation, structural and elastic properties of dysprosium orthovanadate were studied using the powder diffraction method. The studied DyVO4 single crystal was grown by the slow cooling from molten flux. The sample for diffraction analysis was prepared by grinding in an agate mortar. Powder diffraction data at ambient pressure were obtained using a laboratory diffractometer (X'PERT MRD, Philips, with Cu X-ray tube). The lattice parameters calculated using Rietveld method are a = 7.147(2) Å, c = 6.308(2) Å, V = 322.16(6) Å3.

In-situ powder diffraction experiment under pressure was performed at the F2.1 beamline Hasylab/DESY (Hamburg, Germany) using the MAX80 X-ray diffraction press. In this experiment applied pressure was in range from ambient up to 8.45 GPa. Energy-dispersive powder diffraction patterns were obtained with steps about 0.7 GPa. Within the studied range, the phase transition from zircon to scheelite structure was not observed. Cell parameters were calculated by Le Bail method. Above 6 GPa, a diffraction-peak broadening, apparently due to the presence of strain, was observed. In order to minimize the influence of deviatoric stresses on the derived elastic properties, we limited the calculations to the range from ambient pressure to 6 GPa. The lattice parameters vary, in this range, from a= 7.151(1) Å, c= 6.301(1) Å, V = 322.17(16) Å3to a = 7.0314(2) Å, c= 6.233(2) Å, V = 308.16(20) Å3. The bulk modulus B0= 121(2) GPa was calculated by fitting the smooth experimental V(p) dependence using the second order Birch–Murnaghan equation of state. This value is by about 25% lower than the only published one (160 GPa) evaluated on the basis of Raman-spectroscopy data [9], but remains close to the value for a related compound, YVO4, determined at hydrostatic conditions by Wang et al [10].

References

  1. R.A. Fields, M. Birnbaum, C.L. Fincher, "Highly efficient Nd:YVO4 diode-laser end-pumped laser," Appl. Phys. Lett. 51 (1987) 1885-1886.
  2. A.I. Zagumennyĭ, V.G. Ostroumov, I.A. Shcherbakov, T. Jensen, J.P. Meyen, G. Huber, "The Nd:GdVO4 crystal: A new material for diode-pumped lasers," Sov. J. Quantum Electron. 22 (12) (1992) 1071-1072.
  3. A.A. Kaminskii, K. Ueda, H.J. Eichler, Y. Kuwano, H. Kouta, S.N. Bagaev, T.H. Chyba, J.C. Barnesg, G.M.A. Gad, T. Murai, J Lu, "Tetragonal vanadates YVO4 and GdVO4 – new efficient χ(3)-materials for Raman lasers," Optics Commun. 194, 1-3 (2001) 201-206.
  4. E.V. Tsipis, M.V. Patrakeev, V.V. Kharton, N.P. Vyshatko, J. R. Frade, "Ionic and p-type electronic transport in zircon-type Ce1−xAxVO4±δ (A = Ca, Sr)," J. Mater. Chem. 12 (2002) 3738-3745.
  5. M. Yu, J. Lin, S.B. Wang, "Effects of x and R3+ on the luminescent properties of Eu3+ in nanocrystalline YV xP1-xO4:Eu 3+ and RVO4:Eu3+ thin-film phosphors," Appl. Phys. A: Mater. Sci. Proc. 80 (2005) 353-360.
  6. F. Chen, X. Wang, S. Li, G. Fu, K. Wang, Q. Lu, D. Shen, R. Nie, H. Ma, "Low-loss optical planar waveguides in YVO4 produced by silicon ion implantation at low doses," J. Appl. Phys. 94 (2003) 4708-4710.
  7. O. Fukunaga, S. Yamaoka, "Phase transformations in ABO4 type compounds under high pressure," Phys. Chem. Miner. 5 (1979) 167-177.
  8. O. Muller, R. Roy, "Phase transitions among the ABX4 compounds," Z. Kristallogr. Mineral. 138 (1973) 237-253.
  9. G. Chen, R.G. Haire, J.R. Peterson, "Compressibilities of TbVO4 and DyVO4 calculated from spectroscopic Data," Appl. Spectrosc. 46 (1992) 1495-1497.
  10. X. Wang, I. Loa, K. Syassen, M. Hanfland, B. Ferrand, "Structural properties of the zircon- and scheelite-type phases of YVO4 at high pressure," Phys. Rev. B 70 (2004) 064109.

 

Legal notice
  • Legal notice:
 

Related papers

Presentation: Poster at IX Krajowe Sympozjum Użytkowników Promieniowania Synchrotronowego, by Olga Ermakova
See On-line Journal of IX Krajowe Sympozjum Użytkowników Promieniowania Synchrotronowego

Submitted: 2011-07-18 13:35
Revised:   2011-07-22 16:41