Temperature-dependent Raman study of ammonium perchlorate single crystals: Evidence forNH4+quantum rotation below 30 K

1989 ◽  
Vol 39 (6) ◽  
pp. 3835-3844 ◽  
Author(s):  
T. Chakraborty ◽  
A. L. Verma
Keyword(s):  
Single Crystals ◽  
Ammonium Perchlorate ◽  
Temperature Dependent ◽  
Raman Study

Magnetic properties of undoped and Co-doped n-type β–FeSi2.5 single crystals

2002 ◽  
Vol 17 (11) ◽  
pp. 2960-2965 ◽  
Author(s):  
E. Arushanov ◽  
L. Ivanenko ◽  
D. Eckert ◽  
G. Behr ◽  
U. K. Rößler ◽  
...  
Keyword(s):  
Activation Energy ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
External Field ◽  
Single Crystals ◽  
Spin Glasses ◽  
Paramagnetic Centers ◽  
Temperature Dependent ◽  
Paramagnetic Curie Temperature ◽  
Co Doped

Results of magnetization and magnetic susceptibility measurements on undoped and Co-doped FeSi2.5 single crystals are presented. The temperature dependence of the magnetic susceptibility of the Co-doped sample in the range of 5–300 K can be explained by temperature-dependent contributions due to paramagnetic centers and the carriers excited thermally in the extrinsic conductivity region. The values of the paramagnetic Curie temperature and activation energy of the donor levels were estimated. It is also shown that the magnetic susceptibility of Co-doped samples cooled in zero external field and in a field are different. This resembles the properties of spin-glasses and indicates the presence of coupling between magnetic centers.

The mechanism of work-hardening and slip-band formation

1957 ◽  
Vol 242 (1229) ◽  
pp. 147-159 ◽  
Keyword(s):  
Single Crystals ◽  
Slip Band ◽  
Work Hardening ◽  
Stage I ◽  
Polycrystalline Materials ◽  
Temperature Dependent ◽  
Band Formation ◽  
Slip Bands ◽  
Three Stages ◽  
The Difference

A summary is given of some present ideas on the mechanism of work-hardening of single crystals and polycrystalline materials. In particular, the difference is stressed between the three stages of hardening: stage I, or easy glide; stage II, the region of rapid hardening accompanied by short slip lines; and stage III, the region of slow or parabolic hardening which is temperature-dependent and in which long slip bands are formed.

Temperature-dependent Raman scattering study of tin modified PbZrO3 and PbHfO3 single crystals

2015 ◽  
Vol 644 ◽  
pp. 854-861 ◽  
Author(s):  
I. Jankowska-Sumara ◽  
M. Ptak ◽  
M. Mączka ◽  
A. Majchrowski ◽  
T.H. Kim ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Single Crystals ◽  
Temperature Dependent ◽  
Scattering Study

Dynamics and mechanism of the Crystal II → smecticG phase transition in TB7A by a temperature-dependent micro-Raman study and DFT calculations

2009 ◽  
Vol 40 (8) ◽  
pp. 881-886 ◽  
Author(s):  
K. Vikram ◽  
Sunil K. Srivastava ◽  
Animesh K. Ojha ◽  
S. Schlücker ◽  
W. Kiefer ◽  
...  
Keyword(s):  
Phase Transition ◽  
Dft Calculations ◽  
Temperature Dependent ◽  
Raman Study

Raman study of Ca3Co2O6 single crystals

2010 ◽  
Vol 108 (10) ◽  
pp. 103517 ◽  
Author(s):  
Smita Gohil ◽  
Kartik K. Iyer ◽  
P. Aswathi ◽  
Shankar Ghosh ◽  
E. V. Sampathkumaran
Keyword(s):  
Single Crystals ◽  
Raman Study

scholarly journals Temperature-Dependent As K-Edge EXAFS Studies of LaFe 1−x Co x AsO (x = 0.0 and 0.11) Single Crystals

2016 ◽  
Vol 29 (12) ◽  
pp. 3041-3047 ◽  
Author(s):  
Boby Joseph ◽  
Alessandro Ricci ◽  
Nicola Poccia ◽  
Valentin G. Ivanov ◽  
Andrey A. Ivanov ◽  
...  
Keyword(s):  
Single Crystals ◽  
Temperature Dependent

Temperature-dependent Raman study of PrFeO3thin film

2011 ◽  
Vol 42 (2) ◽  
pp. 201-208 ◽  
Author(s):  
Feroz Ahmad Mir ◽  
M. Ikram ◽  
Ravi Kumar
Keyword(s):  
Temperature Dependent ◽  
Raman Study
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