Abstract:
PROBLEM TO BE SOLVED: To provide a composite converging ion beam device capable of performing an observation of high resolution and fine processing, and a processing observation method and a processing method using the same.SOLUTION: A composite converging ion beam device includes a first ion beam irradiation system (10) including a liquid metal ion source generating first ions, and a second ion beam irradiation system (20) including a gas field ion source generating second ions. A second ion beam (20A) emitted by the second ion beam irradiation system (20) has a smaller beam diameter than that of a first ion beam (10A) emitted by the first ion beam irradiation system (10). The second ion beam irradiation system (20) including the gas field ion source can reduce the beam diameter to 1 nm or less, and so an observation of high resolution can be made.
Abstract:
PROBLEM TO BE SOLVED: To provide a composite convergent ion beam device in which processing can be performed promptly without contaminating a sample such as a silicon wafer and high-resolution observation or precise processing can be performed, a processing observation method and a processing method employing the same.SOLUTION: A composite convergent ion beam device comprises a first ion beam radiation system 10 including a liquid metal ion source which generates first ion, and a second ion beam radiation system 2o including a gas field ion source that generates second ion. A beam diameter of a second ion beam 20A emitted from the second ion beam radiation system 20 is smaller than that of a first ion beam 10A emitted from the first ion beam radiation system 10.
Abstract:
PROBLEM TO BE SOLVED: To provide a focused ion beam device which efficiently carries out fine patterning with less damage to a sample by using a gas field ionization ion source.SOLUTION: A focused ion beam device includes a gas field ionization ion source having: an emitter 41 for emitting an ion beam 1; an ion source chamber 40 for housing the emitter 41; a gas supply part 46 for supplying nitrogen to the ion source chamber 40; an extraction electrode 49 for applying an extraction voltage to ionize and extract nitrogen ions; and a temperature control part 34 for cooling the emitter 41.
Abstract:
PROBLEM TO BE SOLVED: To provide an emitter structure which can enhance the cooling efficiency of an emitter, and can hold the emitter stably with high accuracy for a base member, while reducing the number of components or simplifying the device, and to provide a gas ion source and a focused ion beam device.SOLUTION: An emitter structure includes a pair of electrification pins 65 fixed to a base material 61, a filament 66 connected between the pair of electrification pins 65, and an emitter 52 connected with the filament 66 and having a sharpened tip. A support member 54 is fixed to the base material 61, and the emitter 52 is connected with the support member 54.
Abstract:
PROBLEM TO BE SOLVED: To enable obtaining a broad FIM image at an end of an emitter and perform broad FIM observation.SOLUTION: A conversing ion beam apparatus comprises: a gas electric field ionizing ion source 10; an ion gun portion 11 that accelerates gas ions toward a sample S and irradiates the sample S with the accelerated gas ions as an ion beam 3A; a beam optical system 12 that includes at least a conversing lens electrode 35 and irradiates the sample S with the ion beam 3A while conversing it; and an image acquiring mechanism 14 that acquire FIM images at an end of the emitter 20. The image acquiring mechanism 14 includes: an alignment electrode 32 that adjusts an ion beam irradiation direction; an alignment controller 46 that applies an alignment voltage on the alignment electrode 32; a storage unit 45 that stores the acquired FIM images; and an image processing unit 47 that creates one combined FIM image by mutually combining, among the FIM images stored in the storage unit 45, plural FIM images acquired when different alignment voltages are applied.
Abstract:
PROBLEM TO BE SOLVED: To provide an emitter that can have a crystal structure at its topmost end put back into the original state with good reproducibility by re-arraying of atoms by treatment, can suppress a rise in lead voltage after retreatment, and can be used for a long period.SOLUTION: There is provided a method of manufacturing an emitter that includes: an electrolytic polishing step S10 of electrolytically polishing a tip portion of an emitter raw material so that the diameter gradually decreases toward the tip; a first etching step S20 of forming a pyramidal pointed portion having a tip as a peak by performing etching processing by irradiating a processed portion of the emitter raw material with a charge particle beam; a second etching step S30 of making the tip more pointed through electric field induction gas etching processing while observing the crystal structure atop of the pointed portion through an electric field ion microscope, and making the number of atoms constituting the topmost end constant or less; and a heating step S40 of heating the emitter raw material to array the atoms constituting the topmost end of the pointed portion in a pyramidal state.
Abstract:
PROBLEM TO BE SOLVED: To provide a focused ion beam apparatus capable of switching ion species in a short period of time without retaining a gas before replacement in an ion source chamber, and to provide a control method of the same.SOLUTION: A control method of a focused ion beam apparatus comprises at least one of a controlling operation of a cooling apparatus 42 to maintain a temperature of a wall contacting a material gas in an ion source chamber 40 higher than a temperature at which the material gas freezes, and a controlling operation of a heater 45 to temporarily heat up an emitter 41.
Abstract:
PROBLEM TO BE SOLVED: To smoothly change a beam without generating electric discharge in an ion beam optical system.SOLUTION: An ion beam device includes an ion source 101 discharging an ion beam 9, a condenser lens electrode 102, a storage section 13 storing a set voltage value of a lens corresponding to an irradiation mode, and a control section 16 which reads out the set voltage value appropriately corresponding to the next previous irradiation mode and sets the voltage value to a lens power source.