Raman Spectra of Diphenylalanine Microtubes: Polarisation and Temperature Effects : научное издание

Описание

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.3390/cryst10030224

Ключевые слова: PIEZOELECTRIC PROPERTIES, PHASE-TRANSITIONS, SPECTROSCOPY, SCATTERING, CRYSTAL, PRESSURE, PHONONS, Diphenylalanine, Phase transition, Polarisation, Raman spectra, Temperature effects

Аннотация: Diphenylalanine microtubes have remarkable physical properties that allow one to use them in electronics. In this work, we measured polarised temperature-dependent Raman spectra in self-assembled diphenylalanine microtubes grown from the solution. We observed the anomalous temperature behaviour of the Raman lines. Their temperatureПоказать полностьюchanges were minimal, which required a significant improvement in the resolution and stability of Raman measurements. The anomalies in the behaviour of the spectra at about 178 K, 235 K, 255 K, 278 K, 296 K, 398 K and 412 K were observed. The structural phase transition at 398 K is irreversible. This transition is associated with the release of water molecules from nanochannels. The irreversible phase transition has a temperature range of about 10 K.

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Издание

Журнал: CRYSTALS

Выпуск журнала: Vol. 10, Is. 3

ISSN журнала: 20734352

Место издания: BASEL

Издатель: MDPI

Авторы

  • Krylov Alexander (Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia)
  • Krylova Svetlana (Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
  • Kopyl Svitlana (Univ Aveiro, Dept Phys, P-3810193 Aveiro, Portugal; Univ Aveiro, CICECO Mat Inst Aveiro, P-3810193 Aveiro, Portugal)
  • Krylov Aleksandr (Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia)
  • Salehli Ferid (Istanbul Tech Univ, Dept Phys Engn, TR-34469 Istanbul, Turkey)
  • Zelenovskiy Pavel (Univ Aveiro, Dept Phys, P-3810193 Aveiro, Portugal; Univ Aveiro, CICECO Mat Inst Aveiro, P-3810193 Aveiro, Portugal; Ural Fed Univ, Inst Nat Sci & Math, Ekaterinburg 620026, Russia)
  • Vtyurin Alexander (Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Krasnoyarsk 660041, Russia)
  • Kholkin Andrei (Univ Aveiro, Dept Phys, P-3810193 Aveiro, Portugal; Univ Aveiro, CICECO Mat Inst Aveiro, P-3810193 Aveiro, Portugal; Ural Fed Univ, Inst Nat Sci & Math, Ekaterinburg 620026, Russia)

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