Pressure Dependence of the Elastic Constants of NaCl at Low Temperatures

1970 ◽  
Vol 41 (10) ◽  
pp. 4010-4014 ◽  
Author(s):  
M. Ghafelehbashi ◽  
K. M. Koliwad
Keyword(s):  
Elastic Constants ◽  
Pressure Dependence ◽  
Low Temperatures

Pressure Dependence of the Elastic Constants for Silver from 77 to 300 °K

1969 ◽  
Vol 35 (2) ◽  
pp. 1017-1025 ◽  
Author(s):  
P. S. Ho ◽  
J. P. Poirier ◽  
A. L. Ruoff
Keyword(s):  
Elastic Constants ◽  
Pressure Dependence

Pressure dependence of elastic constants of trigonal Se and Te

1976 ◽  
Vol 18 (7) ◽  
pp. 865-869 ◽  
Author(s):  
R.M. Martin ◽  
T.A. Fjeldly ◽  
W. Richter
Keyword(s):  
Elastic Constants ◽  
Pressure Dependence

The thermal conductivity of Ni 2 + doped KMgF 3 in a magnetic field at low temperatures: the effect of single ions and coupled pairs

1970 ◽  
Vol 315 (1523) ◽  
pp. 551-568 ◽  
Keyword(s):  
Magnetic Field ◽  
Thermal Conductivity ◽  
Elastic Constants ◽  
Low Temperatures ◽  
Coupling Constants ◽  
Thermal Resistivity ◽  
Paramagnetic Resonance ◽  
Spin Lattice ◽  
Average Spin ◽  
Lattice Coupling

The thermal conductivity between 0.4 and 4.2 K and in magnetic fields up to 50 kOe of KMgF 3 doped with Ni 2+ has been measured. The results are analysed to give values of the average spin-lattice coupling constants ( x Sl ) for the Ni 2+ ion. These are in agreement with values calculated using the magneto-elastic constants (GX1 and 6r44) derived from acoustic paramagnetic resonance (a.p.r.) experiments. Below IK the thermal resistivity as a function of magnetic field shows a number of anomalies, for which possible causes are discussed; it is concluded that they result from phonon interactions with exchange-coupled pairs of Ni 2+ ions. Such pairs are also observed in a.p.r. experiments.

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