Paramagnetic Resonance Absorption in Single Crystals of Diphenylpicrylhydrazyl at Low Temperatures

1955 ◽  
Vol 23 (9) ◽  
pp. 1738-1739 ◽  
Author(s):  
L. S. Singer ◽  
C. Kikuchi
Keyword(s):  
Single Crystals ◽  
Low Temperatures ◽  
Resonance Absorption ◽  
Paramagnetic Resonance

Paramagnetic Resonance Absorption ofMn++in Single Crystals of CaCO3

1954 ◽  
Vol 93 (3) ◽  
pp. 373-380 ◽  
Author(s):  
F. Kenneth Hurd ◽  
Mendel Sachs ◽  
W. D. Hershberger
Keyword(s):  
Single Crystals ◽  
Resonance Absorption ◽  
Paramagnetic Resonance

Paramagnetic resonance in copper sulphate

1950 ◽  
Vol 201 (1066) ◽  
pp. 366-377 ◽  
Keyword(s):  
Magnetic Field ◽  
Exchange Interaction ◽  
Single Crystals ◽  
Copper Sulphate ◽  
Wave Length ◽  
Resonance Absorption ◽  
Paramagnetic Resonance ◽  
Exchange Frequency ◽  
Susceptibility Data ◽  
The Magnetic Field

Paramagnetic resonance absorption in single crystals of copper sulphate pentahydrate has been investigated at wave-lengths of 3.04, 1.23 and 0.85 cm. Only one absorption line is found at wave-lengths of 3.04 and 1.23 cm., and the position agrees with that calculated from susceptibility data. Two lines would be expected theoretically for many orientations of the crystal in the magnetic field, corresponding to the two inequivalent Cu ++ ions in unit cell. At 0.85 cm. wave-length two lines are found under the appropriate conditions but not at longer wave-lengths. This is interpreted in terms of exchange interaction between dissimilar ions, and the exchange frequency is estimated at 0.15 cm. -1 . Other effects of exchange interaction in this salt are discussed.

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