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Author Mittal, R. ♦ Satyanarayana, M. ♦ Gupta, K. ♦ Gupta, H. ♦ Kaul, S. ♦ Majumdar, A. ♦ Sarkar, G. ♦ Prasad, K. ♦ Subbarao, E. ♦ Velu, E.
Sponsorship IEEE Magnetics Society
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©1965
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics ♦ Electricity & electronics ♦ Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Iron ♦ Phase detection ♦ Needles ♦ Cameras ♦ Magnetization ♦ Temperature
Abstract The phase equilibria in the Mischmetal (MM)-Co-Fe system has been studied at 900°C as a ternary system with Indian MM containing 6 percent Fe. The ternary system shows considerable extensions of the binary 2:17,1:5 and 2:7 phases; as Fe content increased the extensions of the narrow phase regions deviated from the ideal stoichiometry line toward higher transition metal side. Existence of the 5:19 phase was detected in the RE-Co binary. In addition three new ternary phases, the S, T and A phases, were detected at higher Fe contents. The S and T phases extended along the 2:17 stoichiometry line whereas the A phase extended along the same line as the 2:17 phase. Curie temperature (T<inf>c</inf>) and easy axis of magnetisation of the phases were determined. The T<inf>c</inf>of S and 2:17 phases decreased from > 800°C with increasing Fe. While T<inf>c</inf>for the A and T phases also decreased, it remained more or less the same for the 1:5 and 2:7 phases as Fe content was increased. Using magnetically aligned needles in a Weissenberg camera the easy axis of magnetisation of the S and 1:5 phases showed along the [0001] direction. The results thus show that the previously reported change of easy axis for the MM<inf>2</inf>Co<inf>17</inf>phase with increase in Fe content is actually due to the presence of a new phase, the S phase.
Description Author affiliation :: Indian Institute of Technology, Kanpur, India
ISSN 00189464
Education Level UG and PG
Learning Resource Type Article
Publisher Date 1979-11-01
Publisher Place U.S.A.
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Volume Number 15
Issue Number 6
Size (in Bytes) 85.00 kB
Page Count 1
Starting Page 1775
Ending Page 1775

Source: IEEE Xplore Digital Library