scholarly journals Temperature-Dependence of Multiphonon Relaxation of Rare-Earth Ions in Solid-State Hosts

2016 ◽  
Vol 120 (18) ◽  
pp. 9958-9964 ◽  
Author(s):  
Dechao Yu ◽  
John Ballato ◽  
Richard E. Riman
Keyword(s):  
Rare Earth ◽  
Solid State ◽  
Temperature Dependence ◽  
Rare Earth Ions ◽  
Multiphonon Relaxation

scholarly journals Влияние мультиплетных уровней Sm-=SUP=-3+-=/SUP=- и Eu-=SUP=-3+-=/SUP=- на теплоемкость мультиферроика BiFeO-=SUB=-3-=/SUB=-

2021 ◽  
Vol 63 (6) ◽  
pp. 763
Author(s):  
Р.Г. Митаров ◽  
С.Н. Каллаев ◽  
З.М. Омаров ◽  
О.М. Назарова ◽  
Л.А. Резниченко
Keyword(s):  
Thermal Conductivity ◽  
Heat Capacity ◽  
Rare Earth ◽  
Specific Heat ◽  
Temperature Dependence ◽  
Bismuth Ferrite ◽  
Rare Earth Ions ◽  
Phonon Thermal Conductivity ◽  
Additional Heat ◽  
Schottky Effect

The temperature dependence of the heat capacity of the multiferroics BiFeO3, Bi0.90Sm0.10FeO3, and Bi0.90Eu0.10FeO3 has been studied. It was found that the substitution of europium and samarium ions for bismuth ions in bismuth ferrite leads to the appearance of an additional heat capacity component due to transitions of 4f - electrons of rare earth ions to higher levels of the multiplet. A connection is established between the decrease in phonon thermal conductivity and the Schottky effect for the specific heat.

Multiphonon relaxation in the rare-earth ions doped laser crystals

1996 ◽  
Author(s):  
T.T. Basiev ◽  
Yu.V. Orlovskii ◽  
K.K. Pukhov ◽  
V.B. Sigachev ◽  
M.E. Doroshenko ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Ions ◽  
Multiphonon Relaxation ◽  
Laser Crystals ◽  
The Rare Earth
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