U.S. Philips Corporation

Rolf Laurien

Dieter W Mateika

Manfred R Liehr

Werner D Mateika

A cold crucible for melting and crystallizing non-metallic inorganic compounds having a cooled crucible wall in the form of metal pipes through which cooling medium flows which are in mechanical connection with the bottom of the crucible through which cooling medium also flows, and having an induction coil which surrounds the wall of the crucible and via which high frequency energy can be coupled in the contents of the crucible and having a second induction coil which can be controlled independently of the induction coil surrounding the wall of the crucible and which is provided below the bottom of the crucible, and having a crucible bottom consisting of a dielectric material.

Cold crucible for melting and crystallizing non-metallic inorganic

A cold crucible system and method for melting and crystallizing non-metallic inorganic compounds having a crucible, the side and the bottom of which are formed of metal pipes through which a cooling medium flows and independently excitable induction coils surrounding the side wall and the bottom of the crucible for coupling high energy into non-metallic inorganic compound present in said crucible and thus to melt said compound in said crucible, a member formed of an electrically conductive material and inert to any of said melt present in said crucible positioned at a distance above the bottom of the crucible and a container, opened at the top, lowered so as to project from the melt formed in the crucible, provided with apertures for the flow of the melt, and so positioned so as to contain up to 25% of the contents of the crucible.

Cold crucible system and method for the meeting and crystallization of

Magnetic device having a monocrystalline substrate bearing a magnetic layer, said substrate having a composition on the basis of rare earth metal gallium garnet of the general formula ##STR1## wherein A=gadolinium and/or samarium and/or neodym and/or yttrium

Magnetic device having a monocrystalline garnet substrate bearing a

A magnetic device has a monocrystalline garnet substrate bearing a magnetic layer, in particular for use as information storage. Magmetic device having a monocrystalline substrate bearing a magnetic layer, with the substrate having a composition on the basis of rare earth metal gallium garnet of the general formula ##STR1## wherein A=gadolinium and/or smarium and/or neodym and/or yttrium

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Pinneberg, Germany

Rolf Laurien