DocumentCode :
1394099
Title :
A note on crystal formation in the metallic oxides
Author :
Maxwell, L.R. ; Pickart, S.J.
Author_Institution :
US Naval Ordnance Laboratory, White Oak, USA
Volume :
104
Issue :
5
fYear :
1957
fDate :
5/10/1905 12:00:00 AM
Firstpage :
152
Lastpage :
153
Abstract :
The paper describes the behaviour of N23+O3 when heated to the usual sintering temperatures with M2+O in the following combinations: N3+ = B3+, M2+ = Ni2+; N3+ = Fe3+, M2+ = Sr2+ and Ba2+; N3+ = In3+, M2+ = Co2+, Zn2+, Ca2+ and Ba2+; N3+ = Y3+, M2+ = Cu2+, Zn2+, Mn2+, Cd2+, Sr2+ and Ba2+; N3+ = Gd3+, M2+ = Ni2+, Ca2+, Sr2+ and Ba2+; and N3+ = La3+, M2+ = Cu2+, Zn2+, Mn2+, Cd2+, Sr2+ and Ba2+. In many instances, the components would not react, leaving unmixed phases; when reaction did occur, no cubic spinels were formed. The relative size of the trivalent and divalent ion is apparently important for the formation of solid solutions. A double trivalent substitution of both Sc3+ and Al3+ for Fe3+ in nickel ferrite did not yield a compensation point. The relation to ferrite applications is included.
Keywords :
crystal growth; ferrites; ferromagnetic materials; magnetism;
fLanguage :
English
Journal_Title :
Proceedings of the IEE - Part B: Radio and Electronic Engineering
Publisher :
iet
Type :
jour
DOI :
10.1049/pi-b-1.1957.0020
Filename :
5243445
Link To Document :
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