Temperature phase transitions in Rb2KRe3+F6 elpasolites - Raman spectroscopy study

Authors

Keywords:

elpasolites, raman spectroscopy, phase transitions, soft modes, hard modes

Abstract

Phase transitions in crystals of fluorine-containing elpasolites are investigated by Raman scattering spectroscopy. It was found that lattice instabilities in these crystals are induced by soft mode condensations, while restorations of these modes in the distorted phases have not been observed due to their strong interactions with low-frequency noncritical lattice vibrations. Increasing the mass of a rare-earth ions shifts down frequencies of noncritical modes, that enhances these interactions and leads to a narrowing of the range of existence of intermediate phase and then to its disappearance.

Author Biographies

Alexander N VTYURIN, Principal scientist, head of Raman spectroscopy group, Kirensky Institute of Physics Krasnoyarsk

Principal Scientist,

Lab. of Molecular Spectroscopy

Alexander S. Krylov, Kirensky Institute of Physics

Senior scientist,
Lab. of Molecular spectroscopy

Svetlana N. Krylova, Kirensky Institute of Physics

Scientist, 
Lab. of Molecular spectroscopy

Yulia V. Gerasimova, Kirensky Institute of Physics

Scientist, 
Lab. of Molecular spectroscopy

Alexander A. Ivanenko, Kirensky Institute of Physics

Scientist, 
Lab. of Molecular spectroscopy

Vladimir N. Voronov, Kirensky Institute of Physics

Senior scientist, 
Lab. of Crystal Physics

References

E. Meyer, D. Mutukwa, N. Zingwe and R. Taziwa Lead-Free Halide Double Perovskites: A Review of the Structural, Optical, and Stability Properties as Well as Their Viability to Replace Lead Halide Perovskites, Metals 8, p 667 (2018).

L. Chu, W. Ahmad, W. Liu et al. Lead-Free Halide Double Perovskite Materials: A New Superstar Toward Green and Stable Optoelectronic Applications, in Nano-Micro Lett. 11:16 (2019).

H. Wei, M. Du, L. Stand, Z. Zhao, H. Shi, M. Zhuravleva, and C.L. Melcher Scintillation Properties and Electronic Structures of the Intrinsic and Extrinsic Mixed Elpasolites Cs2NaRBr3I3 R = (La, Y), Phys. Rev. Applied 5, 024008 (2016).

S. R. Bowman, C. E. Mungan, New materials for optical cooling, Appl. Phys. B 71, p 807 (2000).

P. A. Tanner, Spectra, energy levels and energy transfer in high symmetry lanthanide compounds, Top. Curr. Chem. 241, p 167 (2004).

B. F. Aull, H. P. Jenssen, Impact of ion-host interactions on the 5d-to-4f spectra of lanthanide rare-earth-metal ions. II. The Ce-doped elpasolites, Phys. Rev. B 34, p 6647 (1986).

I. N. Flerov, M. V. Gorev, K. S. Aleksandrov, A. Tressaud, J. Grannec, and M. Cousi, Phase transitions in elpasolites (ordered perovskites). Mater. Sci. Eng. R 24, p 81 (1998).

A. Vtyurin, A. Krylov, V. Voronov, S. Krylova Raman scattering and phase transitions in fluorides with elpasolite structure, in Ferroelectrics 512, p 58 (2017).

S. N. Krylova, A. N. Vtyurin, A. Bulou, A. S. Krylov, N.G. Zamkova Lattice dynamics and Raman scattering spectrum of elpasolite Rb2KScF6: Comparative analysis, Phys. Solid State. 46, is 7, p 1311 (2004).

A. S. Krylov, S. N. Krylova, A. N. Vtyurin, V. N. Voronov, A. S. Oreshonkov Raman Scattering Study Temperature Phase Transitions of Rb2KInF6 Crystal, Ferroelectrics, 416, p 95 (2011).

M. Couzi, S. Khaïroun, A. Tressaud A. Structural Phase Transitions in Rb2KMIIIF6 Elpasolites. II. Raman scattering and group theoretical studies of Rb2KFeF6 and Rb2KYF6, Physica status solidi (a) 98, is 2, p 423 (1986).

B. V. Beznosikov, I. M. Flerov, M. V. Gorev, S. V. Melnikova, S. V. Misjul, V. N. Voronov Structural phase transitions in elpasolites Rb2NaDyF6 and Rb2KDyF6, Ferroelectrics Letters Section, 1, p 35–41 (1983).

I. N. Flerov, M. V. Gorev, V. N. Voronov, A. Tressaud, J. Grannec, H. Guengard Thermodynamic properties of elpasolites Rb2KB3F6 (B3: Er, Ho), Ferroelectrics, 168, 1, p 55-60, (1995).

A. S. Krylov, A. N. Vtyurin, A. S. Oreshonkov, V. N. Voronov and S. N. Krylova Structural transformations in a single-crystal Rb2NaYF6: Raman scattering study. J. Raman Spectrosc., 44, p 763–769, (2013).

A. Krylov, A. Vtyurin, V. Voronov, S. Krylova Manifestations of Structural Phase Transitions in a Rb2KLuF6 Crystal in Its Raman Spectra, Optics and Spectroscopy 126, is 4, p 423–427 (2019).

A. S. Krylov, A. N. Vtyurin, V.N. Voronov and S. N. Krylova Phase transitions in Rb2KLuF6 crystal, Ferroelectrics 538, p 28–34 (2019).

M. V. Gorev, I. N. Flerov, V. N. Voronov, S. V. Misyul' Pressure-temperature phase diagrams of elpasolites Rb2KB3+F6 (B3+ =Ho, Dy, Tb). Phys. Solid State, 35, Is 4, p 524-527 (1993).

I. N. Flerov, M. V. Gorev, S. V. Melnikova, S. V. Misyul, V. N. Voronov, K. S. Aleksandrov Phase transitions in elpasolite Rb2KScF6. Phys. Solid State, 34, 2185 (1992).

K. S. Aleksandov and J. Bartolome, Structural distortions in families of perovskite-like crystals. Phase Transitions, 74, p 255 (2001).

P.Selgert, C.Lingner, B.Luthi On the structural phase transition in rare earth elpasolites. Z. Phys. B – Cond. Matt., 55, p 219 (1984).

A.S. Krylov, A. Bulou, S.N. Krylova. Symmetry analysis of calculated vibrational spectra of Rb2KScF6 crystal, Computational Materials Science 36, Is 1-2, p 221-224 (2006).

I. N. Safonov, S. V. Misyul, M. S. Molokeev, M. P. Ivliev Structural transformations and phenomenological description of the formation of phase tsates in elpasolites Cs2RbDyF6 and Rb2KB’F6 (B’ = Ho, Dy, Tb). Phys. Solid State, 57, p 491 (2015).

K. S. Aleksandrov, S. V. Misyul, M. S. Molokeev, V. N. Voronov, Structures of distorted phases and critical and noncritical atomic displacements of elpasolite Rb2KInF6 during phase transitions, Phys. Solid State, 51, p 2505, (2009).

I. N. Flerov, M. V. Gorev, K. S. Aleksandrov, A. Tressaud, V. D. Fokina Ferroelastic phase transitions in fluorides with cryolite and elpasolite structures. Crystallography Reports, 49, p 100-107, (2004).

E. K. H. Salje Hard mode spectroscopy: experimental studies of structural phase transitions, Phase Transitions, 37, p 83-110 (1992).

U. Bismayer Hard mode Raman spectroscopy and its application to ferroelastic and ferroelectric phase transitions, Phase Transitions, 27, p 211-267 (1990).

K. Nakamoto, Infrared and Raman Spectra of Inorganic and Coordination Compounds Wiley, New York (1986).

I. N. Flerov and M. V. Gorev. Entropy and the Mechanism of Phase Transitions in Elpasolites. Phys. Solid State, 43, p 127–136 (2001).

Downloads

Published

2021-11-29

How to Cite

VTYURIN, A. N., Krylov, A. S., Krylova, S. N., Gerasimova, Y. V., Ivanenko, A. A., & Voronov, V. N. (2021). Temperature phase transitions in Rb2KRe3+F6 elpasolites - Raman spectroscopy study. OAJ Materials and Devices, 5(1). Retrieved from http://caip.co-ac.com/index.php/materialsanddevices/article/view/94

Issue

Section

Articles