Calorimetric study of the desorption of the interstitial hydrogen atoms in ferromagneticNd2Fe14BHx(x<~5)microcrystals

1997 ◽  
Vol 56 (2) ◽  
pp. 726-737 ◽  
Author(s):  
S. Ram ◽  
H. J-Fecht ◽  
S. Haldar ◽  
P. Ramachandrarao ◽  
H. D. Banerjee
Keyword(s):  
Calorimetric Study ◽  
Hydrogen Atoms ◽  
Interstitial Hydrogen

ESR spectra of interstitial hydrogen atoms in dipotassium hexafluorosilicate

1980 ◽  
Vol 84 (26) ◽  
pp. 3630-3633 ◽  
Author(s):  
Akinori Hasegawa ◽  
Koichi Nishikida ◽  
F. Williams
Keyword(s):  
Esr Spectra ◽  
Hydrogen Atoms ◽  
Interstitial Hydrogen

Magneto-optical properties of interstitial hydrogen atoms in alkali halides

1971 ◽  
Vol 322 (1548) ◽  
pp. 27-44 ◽  
Keyword(s):  
Excited States ◽  
Magnetic Circular Dichroism ◽  
Alkali Halides ◽  
Large Temperature ◽  
Hydrogen Atoms ◽  
Temperature Dependent ◽  
Absorption Bands ◽  
Optical Effects ◽  
Charge Transfer Transitions ◽  
Interstitial Hydrogen

Measurements have been made of both Faraday rotation and magnetic circular dichroism of ultraviolet absorption bands of interstitial hydrogen atoms ( U 2 centres) in alkali halides. Large temperature dependent magneto-optical effects have been observed for the U 2 absorption bands which indicate large spin-orbit coupling in the excited states of the transitions. These effects suggest that the excited states are composed primarily of lattice ion wavefunctions. The results are explained on the basis of an l.c.a.o. model for incomplete charge–transfer transitions. Values for parameters of the model determined from our experiments and from earlier band structure calculations are in reasonable agreement.

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