Abstract: A new class of phase change materials has been discovered based on compounds of: Ga; lanthanide; and chalcogenide. This includes compounds of Ga, La, and S (GLS) as well as related compounds in which there is substitution of S with O, Se and/or Te. Moreover, La can be substituted with other lanthanide series elements. It has been demonstrated that this class of materials exhibit low energy switching. For example, the GLS material can provide an optical recording medium with erasability 3-5 dB greater than the erasability of GeSbTe (GST) material which is the standard material for phase change memories.

Abstract: A new class of phase change materials has been discovered based on compounds of: Ga; lanthanide; and chalcogenide. This includes compounds of Ga, La, and S (GLS) as well as related compounds in which there is substitution of S with O, Se and/or Te. Moreover, La can be substituted with other lanthanide series elements. It has been demonstrated that this class of materials exhibit low energy switching. For example, the GLS material can provide an optical recording medium with erasability 3-5 dB greater than the erasability of GeSbTe (GST) material which is the standard material for phase change memories.

Abstract: A new class of phase change materials has been discovered based on compounds of: Ga; lanthanide; and chalcogenide. This includes compounds of Ga, La, and S (GLS) as well as related compounds in which there is substitution of S with O, Se and/or Te. Moreover, La can be substituted with other lanthanide series elements. It has been demonstrated that this class of materials exhibit low energy switching. For example, the GLS material can provide an optical recording medium with erasability 3-5 dB greater than the erasability of GeSbTe (GST) material which is the standard material for phase change memories.

Abstract: An aerosol generator apparatus 10 for mounting on a vehicle for dispensing minute quantities of liquid in a primary airstream to form a fog having finely divided droplets of liquid entrained therein includes an air blower 16, an air duct 18 mounted in communication with the air blower, a nozzle assembly 20 mounted in communication with the air duct, and liquid delivery means 49 for delivering a quantity of liquid to the nozzle assembly. Control means 31, 38 responsive to the speed of the vehicle are provided for controlling the airstream pressure delivered to the nozzle for maintaining the size of droplets of liquid in the fog within a selected range despite variations in the speed of the vehicle. A LORAN unit 32 is provided for sensing the vehicle's location and the control means 31 is adapted for recording when, where and how much liquid was dispensed.