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.

Paramagnetic Resonance Absorption of Violanthrone and Violanthrene

1954 ◽  
Vol 22 (12) ◽  
pp. 2087-2087 ◽  
Author(s):  
Y. Yokozawa ◽  
I. Tatsuzaki
Keyword(s):  
Resonance Absorption ◽  
Paramagnetic Resonance

EPR of VO2+ in ZnTiF6 · 6H2O

1996 ◽  
Vol 51 (4) ◽  
pp. 245-248
Author(s):  
Geetha Jayaram ◽  
V. G. Krishnan
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Single Crystals ◽  
Spin Hamiltonian ◽  
Paramagnetic Resonance ◽  
Tutton Salts ◽  
Bonding Parameters ◽  
Superhyperfine Structure ◽  
Vanadyl Ion ◽  
Electron Paramagnetic

Abstract Electron Paramagnetic Resonance (EPR) studies have been carried out on the vanadyl (VO2) ion doped in single crystals of ZnTiF6 • 6H2O. The spectra indicate the presence of one set of eight lines characteristic of only one occupation site. The V-O bond orientation is along one of the three Zn-H2O bond directions in the trigonally distorted [Zn(H2O)6] octahedra. This behaviour is unlike that reported for vanadyl ion substituting for the M(H2O)6 sites in the Tutton salts, alums and AlCl3 • 6H2O. The Spin-Hamiltonian and bonding parameters for the [VO(H2O)5] complex have been evaluated. The hyperfine linewidths are 0.8 mT at 300 K and 77 K. No proton superhyperfine structure was observed at both these temperatures.

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