Faraday effect and magnetic susceptibility investigations of rare‐earth garnets R3Ga5O12, where R = Y, Nd, Tb, Dy, Er, Tm, and R3Al5O12, where R = Y, Tb, Dy, Ho, Er, Tm, Yb, are made. For all the garnets the values of magneto‐optical Faraday parameters A, B, C and “effective” frequencies of transitions responsible for the rotation observed are defined. The obtained results are compared with similar investigations data in iron garnets.

The Magneto-Optical Spectra and Behaviour of the Joint Density of States of the Intermetallic Compounds RFeZ (R = Gd, Tb, Dy, Ho, Er) andYFe2 BY K.M. MUKIMOV, SH.M. SHARIPOV, and L.A. ERNAZAROVA The properties of the cubic Laves phase RMZ intermetallic compounds (R: rare-earth, M: 3d transition metal) have been extensively studied for a long

The Heavv Rare-Earth Contribution to the Electronic Structure 1) of the R F e 2 and R2Fe17 Intermetallic Compounds SH.M. SHARIPOV, K.M. MUKIMOV, and L.A. ERNAZAROVA BY Recent measurements of the magneto-optical equatorial Kerr -effect ( 6 ) spectra on the cubic Laves phase intermetallic compounds RFe2 (R = Gd, Tb, Dy, Ho, Er) and YFe2 showed that the structure of these spectra depends on the atomic number of r a r e -e a r t h s /l/. Such dependence is also observed in the spectra of the off-diagonal elements E and of the dielectric tensor and conductivity tensor, respectively. In this note w e represent m o r e data about

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