Monday, April 19 (note special date), Saul Oseroff, SDSU Physics, "Still some interesting physics in "simple" systems?"  2 p.m. P-148

Hexaborides, RB₆ (R= Ca, Sr, Ba, RE), have been studied for several decades. They have a simple cubic structure, and high quality crystals can been growth for all R's. A large number of theoretical and experimental papers had been published by different groups on these compounds during the last forty years. However, their properties are far from being understood. Ca_1-x Eu_xB₆, 0 < x < 1 will be discussed in detail. CaB₆ is possibly a semimetal and EuB₆ becomes ferromagnetic at low temperature. Transport ( Resistivity, Specific heat, Hall effect, etc. ) and magnetic ( Magnetization, EPR, Raman, etc.) properties of these compounds will be presented and discussed.