The effect of weak exchange interaction on electron paramagnetic resonance in dichloro bis-o-phenylene bis-dimethyl arsino nickelate(III) chloride

1984 ◽  
Vol 52 (1) ◽  
pp. 65-80 ◽  
Author(s):  
B.L. Ramakrishna ◽  
P.T. Manoharan
2003 ◽  
Vol 83 (26) ◽  
pp. 5428-5430 ◽  
Author(s):  
Agnieszka Wolos ◽  
Maria Palczewska ◽  
Zbyslaw Wilamowski ◽  
Maria Kaminska ◽  
Andrzej Twardowski ◽  
...  

Cerâmica ◽  
2020 ◽  
Vol 66 (378) ◽  
pp. 126-129
Author(s):  
R. S. de Biasi ◽  
M. L. N. Grillo

Abstract Electron paramagnetic resonance (EPR) spectra of manganese-doped strontium titanate were investigated for several Mn concentrations. The spectra of Mn2+ and Mn4+ ions were observed and attributed, respectively, to Mn ions occupying Sr2+ and Ti4+ sites. The relative intensity of the spectra suggested that the manganese ions occupy preferentially Ti4+ sites. The results showed that the EPR peak-to-peak linewidth of the Mn4+ spectrum increases with manganese concentration according to the theoretical equation DHpp=0.45+210.f.(1-f)80 (mT). This suggested that the exchange interaction between tetravalent manganese ions in strontium titanate has an approximate range of 0.96 nm, comparable to that of Gd3+ in the same compound.


2006 ◽  
Vol 110 (7) ◽  
pp. 2315-2317 ◽  
Author(s):  
Matvey V. Fedin ◽  
Sergey L. Veber ◽  
Igor A. Gromov ◽  
Victor I. Ovcharenko ◽  
Renad Z. Sagdeev ◽  
...  

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