Angular variations of de Haas-van Alphen frequencies of the order of 104 gauss were studied in low magnetic fields by using the torque method. These frequencies were attributed to interconnecting necks between nearly spherical ellipsoids which were centered at the points X in the simple cubic Brillouin zone. The magnetic breakdown field was estimated to be about 150kOe from the Fermi surface parameter. These results were consistent with previously reported de Haas-van Alphen data.

Low-Field De Haas-Van Alphen Effect in LaB6. Ishizawa, Y., Nozaki, H., Tanaka, T., Nakajima, T.: Journal of the Physical Society of Japan, 1980, 48[5], 1439-42