Growth Dynamics of Photoinduced Phase Domain in Cyano-Complex Studied by Boundary Sensitive Raman Spectroscopy

• Authors: A. Asahara , M. Nakajima , R. Fukaya , H. Tokoro , S. Ohkoshi , T. Suemoto
• Languages of publication: EN

Abstracts

EN

Rubidium manganese hexacyanoferrate exhibits charge transfer phase transition from high temperature phase to low temperature phase at 230 K. This phase transition can also be triggered by light irradiation resonantly inducing charge transfer from Mn^{2+} to Fe^{3+}. In the present study, boundary sensitive Raman spectroscopy was performed for Rb_{0.94}Mn[Fe(CN)_6]_{0.98}·0.2H_2O in both cases of photoinduced and thermal phase transition. Since the frequencies of C ≡ N stretching vibration modes are very sensitive to the valence states of the adjacent metal ions, we can quantify the distribution of not only high and low temperature phase but also boundary configurations from the observed spectra. We obtained the time evolution of the fraction ratios of the valence states from the observed peak areas. In the case of photoinduced situation, the boundary increases up to 15% when high temperature phase diminishes to 55% of the initial fraction. This is quite different from the result in thermal phase transition where the boundary is created only 0.8% at the same high temperature phase fraction value. We conclude that many small domains are preferably created in photoinduced phase transition since the ratio of boundary is large, while large domains grow in thermal phase transition.

Keywords

EN

64.60.-i; 82.50.Hp; 78.30.-j

Discipline

• 82.50.Hp: Processes caused by visible and UV light
• 64.60.-i: General studies of phase transitions(see also 63.70.+h Statistical mechanics of lattice vibrations and displacive phase transitions; for critical phenomena in solid surfaces and interfaces, and in magnetism, see 68.35.Rh, and 75.40.-s, respectively)
• 78.30.-j: Infrared and Raman spectra(for vibrational states in crystals and disordered systems, see 63.20.-e and 63.50.-x, respectively; for Raman spectra of superconductors, see 74.25.nd)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 2
• Pages: 375-384

Dates

published

2012-02

Contributors

author

A. Asahara

• Institute for Solid State Physics, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwashi, Chiba, 277-8581, Japan

author

M. Nakajima

• Institute for Solid State Physics, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwashi, Chiba, 277-8581, Japan

author

R. Fukaya

• Institute for Solid State Physics, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwashi, Chiba, 277-8581, Japan

author

H. Tokoro

• Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo, 113-0033, Japan

author

S. Ohkoshi

• Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku Tokyo, 113-0033, Japan

author

T. Suemoto

• Institute for Solid State Physics, The University of Tokyo, Kashiwanoha 5-1-5, Kashiwashi, Chiba, 277-8581, Japan

References

• [1] R. Yabuki, K. Nasu, Phys. Lett. A 320, 289 (2004)
• [2] M. Nishino, C. Enachescu, S. Miyashita, K. Boukheddaden, F. Varret, Phys. Rev. B 82, 020409 (2010)
• [3] L. Egan, K. Kamenev, D. Papanikolaou, Y. Takabayashi, S. Margadonna, J. Am. Chem. Soc. 128, 6034 (2006)
• [4] S. Ohkoshi, H. Tokoro, T. Matsuda, H. Takahashi, H. Irie, K. Hashimoto, Angew. Chem. Int. Ed. 46, 3238 (2007)
• [5] T. Mahfoud, G. Molnar, S. Bonhommeau, S. Cobo, L. Salmon, P. Demont, H. Tokoro, S. Ohkoshi, K. Boukheddaden, A. Bousseksou, J. Am. Chem. Soc. 131, 15049 (2009)
• [6] H. Tokoro, T. Matsuda, T. Nuida, Y. Moritomo, K. Ohoyama, E.D.L. Dangui, K. Boukheddaden, S. Ohkoshi, Chem. Mater. 20, 423 (2008)
• [7] E.D. Loutete-Dangui, E. Codjovi, H. Tokoro, P.R. Dahoo, S. Ohkoshi, K. Boukheddaden, Phys. Rev. B 78, 014303 (2008)
• [8] R. Fukaya, M. Nakajima, H. Tokoro, S. Ohkoshi, T. Suemoto, J. Chem. Phys. 131, 154505 (2009)
• [9] S. Ohkoshi, H. Tokoro, K. Hashimoto, Coord. Chem. Rev. 249, 1830 (2005)
• [10] E.J.M. Vertelman, T.T.A. Lummen, A. Meetsma, M.W. Bouwkamp, G. Molnar, P.H.M. van Loosdrecht, P.J. van Koningsbruggen, Chem. Mater 20, 1236 (2008)
• [11] T.T.A. Lummen, R.Y.N. Gengler, P. Rudolf, F. Lusitani, E.J.M. Vertelman, P.J. van Koningsbruggen, M. Knupfer, O. Molodtsova, J.-J. Pireaux, P.H.M. van Loosdrecht, J. Phys. Chem. C 112, 14158 (2008)
• [12] S. Cobo, R. Fernandez, L. Salmon, G. Molnar, A. Bousseksou, Eur. J. Inorg. Chem. 11, 1549 (2007)

Identifiers

DOI

10.12693/APhysPolA.121.375