High Temperature Susceptibility of Garnets: Exchange Interactions in YIG and LuIG

1962 ◽  
Vol 33 (3) ◽  
pp. 1257-1258 ◽  
Author(s):  
Peter J. Wojtowicz
2003 ◽  
Vol 17 (24) ◽  
pp. 1271-1275 ◽  
Author(s):  
I. ARDELEAN ◽  
C. ANDRONACHE ◽  
P. PǍŞCUŢǍ

The temperature dependence of the magnetic susceptibility of x Fe 2 O 3·(100-x)-[ P 2 O 5· CaO ] glasses with 0<x≤50 mol % have been investigated. These data revealed that the valence states and the distribution of iron ions in the glass matrix depend on the Fe 2 O 3 content. For the glasses with x≤1 mol % only Fe 3+ ions are evidenced. In the case of the glasses with 3≤x≤35 mol % both Fe 3+ and Fe 2 ions co-exist in the P 2 O 5· CaO glass matrix, the Fe 2+ ion content is higher than that of the Fe 3+ ions for glasses with x≥10 mol %. For the glasses with x>35 mol %, the evaluated values of the μ eff indicate either the presence of Fe + ions or the coordination influence on the magnetic moment of iron ions, but the presence of small quantities of the antiferromagnetic or ferrimagnetic interactions between iron ions in studied temperature range cannot be excluded. The high temperature susceptibility results indicate that the iron ions are isolated or participate in dipole-dipole interactions for glasses with x≤35 mol % and are antiferromagnetically coupled for higher contents of Fe 2 O 3.


ChemInform ◽  
2010 ◽  
Vol 23 (21) ◽  
pp. no-no
Author(s):  
A. J. TWIN ◽  
J. S. ABELL ◽  
I. R. HARRIS

1984 ◽  
Vol 29 (7) ◽  
pp. 4144-4146 ◽  
Author(s):  
A. F. J. Morgownik ◽  
J. A. Mydosh ◽  
C. L. Foiles

1985 ◽  
Vol 47-48 ◽  
pp. 75-78 ◽  
Author(s):  
P. Weidner ◽  
K. Keulerz ◽  
R. Löhe ◽  
B. Roden ◽  
J. Röhler ◽  
...  

2016 ◽  
Vol 108 (19) ◽  
pp. 192403 ◽  
Author(s):  
T. J. Williams ◽  
A. E. Taylor ◽  
A. D. Christianson ◽  
S. E. Hahn ◽  
R. S. Fishman ◽  
...  

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