Patent Number: 
Section: claims

1. A focused ion beam apparatus, comprising:a sample stage for mounting a specimen;an ion beam irradiating optical system for irradiating a focused ion beam to the specimen;a deposition-gas supplying source for supplying a deposition gas used for forming a deposition film at an area to be irradiated with the focused ion beam;a sample holder provided with a fixing surface for fixing, via the deposition film, a micro-specimen separated from the specimen using a method for fabrication by the focused ion beam, in which a width of the fixing surface is smaller than 50 microns;a specimen transferring unit having a probe to which the specimen can be joined through the deposition film, and transferring the micro-specimen separated from the specimen by the focused ion-beam fabrication method, to said sample holder; anda sample chamber in which said sample, said sample holder and at least a portion of said probe are laid out,wherein, in said sample chamber, the micro-specimen separated from the specimen by the focused ion-beam fabrication method is fixed to the fixing surface of said sample holder through the deposition film, and the micro-specimen fixed to the fixing surface is fabricated by irradiating the focused ion beam. 2. A focused ion beam apparatus, comprising:a sample stage for mounting a specimen;an ion beam irradiating optical system for irradiating a focused ion beam to the specimen;a deposition-gas supplying source for supplying a deposition gas used for forming a deposition film at an area to be irradiated with the focused ion beam;a sample holder provided with a fixing surface for fixing, via the deposition film, a micro-specimen separated from the specimen using a method for fabrication by the focused ion beam, in which a dent with depth of at least 20 microns is not provided on the fixing surface of said sample holder;a specimen transferring unit having a probe to which the specimen can be joined through the deposition film, and transferring the micro-specimen separated from the specimen by the focused ion-beam fabrication method, to said sample holder; anda sample chamber in which said sample, said sample holder and at least a portion of said probe are laid out,wherein, in said sample chamber, the micro-specimen separated from the specimen by the focused ion-beam fabrication method is fixed to the fixing surface of said sample holder through the deposition film, and the micro-specimen fixed to the fixing surface is fabricated by irradiating the focused ion beam. 3. A focused ion beam apparatus, comprising:a sample stage for mounting a specimen;an ion beam irradiating optical system for irradiating a focused ion beam to the specimen;a deposition-gas supplying source for supplying a deposition gas used for forming a deposition film at an area to be irradiated with the focused ion beam;a sample holder provided with a fixing surface for fixing, via the deposition film, a micro-specimen separated from the specimen using a method for fabrication by the focused ion beam, in which a width of the fixing surface is smaller than 50 microns, and the fixing surface is flat so that the separated micro-specimen fixed to the fixing surface is not embedded in a dent on the fixing surface;a specimen transferring unit having a probe to which the specimen can be joined through the deposition film, and transferring the micro-specimen separated from the specimen by the focused ion-beam fabrication method, to said sample holder; anda sample chamber in which said sample, said sample holder and at least a portion of said probe are laid out,wherein, in said sample chamber, the micro-specimen separated from the specimen by the focused ion-beam fabrication method is fixed to the fixing surface of said sample holder through the deposition film, and the micro-specimen fixed to the fixing surface is fabricated by irradiating the focused ion beam. 4. The focused ion beam apparatus according to claim 1, wherein the sample holder is provided with a metallic wire. 5. The focused ion beam apparatus according to claim 1, wherein the fixing surface has a metallic surface. 6. The focused ion beam apparatus according to claim 1, wherein the sample holder is provided with a sliver of silicon. 7. The focused ion beam apparatus according to claim 1, wherein the fixing surface has a ground surface of silicon. 8. The focused ion beam apparatus according to claim 1, wherein the cross section of the sample holder is a convex shape. 9. The focused ion beam apparatus according to claim 2, wherein the sample holder is provided with a metallic wire. 10. The focused ion beam apparatus according to claim 2, wherein the fixing surface has a metallic surface. 11. The focused ion beam apparatus according to claim 2, wherein the sample holder is provided with a sliver of silicon. 12. The focused ion beam apparatus according to claim 2, wherein the fixing surface has a ground surface of silicon. 13. The focused ion beam apparatus according to claim 2, wherein the cross section of the sample holder is a convex shape. 14. The focused ion beam apparatus according to claim 3, wherein the sample holder is provided with a metallic wire. 15. The focused ion beam apparatus according to claim 3, wherein the fixing surface has a metallic surface. 16. The focused ion beam apparatus according to claim 3, wherein the sample holder is provided with a sliver of silicon. 17. The focused ion beam apparatus according to claim 3, wherein the fixing surface has a ground surface of silicon. 18. The focused ion beam apparatus according to claim 3, wherein the cross section of the sample holder is a convex shape.