You need JavaScript to view this

The Neutron Powder Diffraction and Acoustic Investigations of the NH{sub 4}SCN Phase Diagram

Technical Report:

Abstract

The phase diagram of NH{sub 4}SCN was investigated by neutron powder diffraction and acoustic methods, in order to search for a possible triple point and to reveal possible peculiarities near 200 K, observed by other authors, by Raman light scattering. The transition from the monoclinic to the orthorhombic phase was determined on the p-T phase plane in the range of 193-323 K and up to 1.6 GPa by the acoustic method. The temperature dependences of the unit cell parameters and volume and of the transversal wave velocity reveal some anomalies in the monoclinic NH{sub 4}SCN phase near 200 K. It is possible that these observed anomalies are due to a freezing of the reorientation processes of NH{sub 4}{sup +} ions. 13 refs., 6 figs.
Authors:
Smirnov, L S; Natkaniec, I; Bragin, S I; Solov`ev, A I; [1]  Brankowski, J; [2]  Goncharova, V A; Gromnitskaya, E L; Il`ina, G G; Stal`gorova, O V [3] 
  1. Joint Inst. for Nuclear Research, Dubna (Russian Federation). Lab. of Neutron Physics
  2. Institute of Nuclear Physics, Cracow (Poland)
  3. AN SSSR, Moscow (Russian Federation). Inst. Fiziki Vysokikh Davlenij
Publication Date:
Dec 31, 1994
Product Type:
Technical Report
Report Number:
JINR-E-14-94-266
Reference Number:
SCA: 665300; PA: AIX-26:013923; EDB-95:032961; SN: 95001325696
Resource Relation:
Other Information: PBD: 1994
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AMMONIUM THIOCYANATES; NEUTRON DIFFRACTION; ULTRASONIC TESTING; CRYSTAL-PHASE TRANSFORMATIONS; LATTICE PARAMETERS; MONOCLINIC LATTICES; NITROGEN HYDRIDES; ORTHORHOMBIC LATTICES; PHASE DIAGRAMS; POWDERS; PRESSURE DEPENDENCE; SULFUR NITRIDES; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0065-0273 K; TEMPERATURE RANGE 0273-0400 K; TRANSITION TEMPERATURE; WAVELENGTHS; 665300; INTERACTIONS BETWEEN BEAMS AND CONDENSED MATTER
OSTI ID:
10112962
Research Organizations:
Joint Inst. for Nuclear Research, Dubna (Russian Federation). Lab. of Neutron Physics
Country of Origin:
JINR
Language:
English
Other Identifying Numbers:
Other: ON: DE95614372; TRN: XJ9406587013923
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
10 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Smirnov, L S, Natkaniec, I, Bragin, S I, Solov`ev, A I, Brankowski, J, Goncharova, V A, Gromnitskaya, E L, Il`ina, G G, and Stal`gorova, O V. The Neutron Powder Diffraction and Acoustic Investigations of the NH{sub 4}SCN Phase Diagram. JINR: N. p., 1994. Web.
Smirnov, L S, Natkaniec, I, Bragin, S I, Solov`ev, A I, Brankowski, J, Goncharova, V A, Gromnitskaya, E L, Il`ina, G G, & Stal`gorova, O V. The Neutron Powder Diffraction and Acoustic Investigations of the NH{sub 4}SCN Phase Diagram. JINR.
Smirnov, L S, Natkaniec, I, Bragin, S I, Solov`ev, A I, Brankowski, J, Goncharova, V A, Gromnitskaya, E L, Il`ina, G G, and Stal`gorova, O V. 1994. "The Neutron Powder Diffraction and Acoustic Investigations of the NH{sub 4}SCN Phase Diagram." JINR.
@misc{etde_10112962,
title = {The Neutron Powder Diffraction and Acoustic Investigations of the NH{sub 4}SCN Phase Diagram}
author = {Smirnov, L S, Natkaniec, I, Bragin, S I, Solov`ev, A I, Brankowski, J, Goncharova, V A, Gromnitskaya, E L, Il`ina, G G, and Stal`gorova, O V}
abstractNote = {The phase diagram of NH{sub 4}SCN was investigated by neutron powder diffraction and acoustic methods, in order to search for a possible triple point and to reveal possible peculiarities near 200 K, observed by other authors, by Raman light scattering. The transition from the monoclinic to the orthorhombic phase was determined on the p-T phase plane in the range of 193-323 K and up to 1.6 GPa by the acoustic method. The temperature dependences of the unit cell parameters and volume and of the transversal wave velocity reveal some anomalies in the monoclinic NH{sub 4}SCN phase near 200 K. It is possible that these observed anomalies are due to a freezing of the reorientation processes of NH{sub 4}{sup +} ions. 13 refs., 6 figs.}
place = {JINR}
year = {1994}
month = {Dec}
}