Raman fingerprint of orientational freezing in mixed molecular crystals.

نویسندگان

  • Joosen
  • Fleurent
  • Bostoen
  • Schoemaker
  • Haussühl
چکیده

Disclaimer/Complaints regulations If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Studies of Orientational Order of Some Nematogens by means of Raman Scattering Spectroscopy

The orientational behaviour of some liquid crystals with various molecular structures was studied by means of the Raman scattering depolarization method. The Raman scattering spectra of linearly polarized light were recorded as a function of temperature in the nematic phase. On the basis of these spectra the order parameters 〈P2〉 and 〈P4〉 as well as the molecular distribution function were dete...

متن کامل

Raman excitations and orientational ordering in deuterium at high pressure.

High-resolution Raman spectra of ortho/para mixed crystals of deuterium to 4 K and pressures to 40 GPa reveal a number of phenomena. We find for para-containing samples a large enhancement of highfrequency vibron sidebands, a total of 11 vibron peaks, and significant changes in the low-frequency rotational excitations upon passage into the low-temperature phase. Analysis of the spectra reveals ...

متن کامل

Orientational disorder in plastic molecular crystals - III. - Infrared and Raman spectroscopy of internal modes

2014 The formalism of symmetry adapted functions for molecular orientations introduced previously [5, 6] is here applied to the analysis of the Raman and infrared spectroscopy of internal modes in orientationally disordered molecular crystals. In some favorable cases, the contribution to the Raman and infrared lineshapes arising from the rotational dynamics of the molecules can be disentangled ...

متن کامل

Double primary relaxation in a highly anisotropic orientational glass-former with low-dimensional disorder

The freezing of the cooperative reorientational motions in orientationally disordered (OD) molecular crystals marks the so-called “glassy” transition, which may be considered a lower-dimensional version of the structural glass transition. While structural glasses display both positional and orientational disorder, in fact, in orientational glasses the disorder involves exclusively the orientati...

متن کامل

Laser Micro-Raman Spectroscopy of CVD Nanocrystalline Diamond Thin Film

Laser micro-Raman spectroscopy is an ideal tool for assessment and characterization of various types of carbon-based materials. Due to its special optical properties (CrN) coated stainless steel substrates. NCD films have been investigated by laser micro-Raman spectroscopy. The fingerprint of diamond based materials is in the spectral region of 1000-1600 cm-1 in the first order of Raman scatter...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Physical review. B, Condensed matter

دوره 43 13  شماره 

صفحات  -

تاریخ انتشار 1991