Počet záznamů: 1  

Scanning vector Hall probe microscope

  1. 1. 0205719 - UPT-D 20030102 RIV US eng J - Článek v odborném periodiku
    Fedor, J. - Cambel, V. - Gregušová, D. - Hanzelka, Pavel - Dérer, J. - Volko, J.
    Scanning vector Hall probe microscope.
    Review of Scientific Instruments. Roč. 74, č. 12 (2003), s. 5105 - 5110 ISSN 0034-6748
    Výzkumný záměr: CEZ:AV0Z2065902
    Klíčová slova: VHPM * Hall sensor * Helium cryostat
    Kód oboru RIV: JB - Senzory, čidla, měření a regulace
    Impakt faktor: 1.343, rok: 2003

    We present a scanning vector Hall probe microscope for imaging the entire magnetic field vector in close proximity to magnetic and superconducting samples. The microscope combines a large scanned area and a high space resolution of the magnetic field vector measured. A special feature of the equipment is a vacuum-tight sample space connected with a moving system via a flexible metal bellows. The microscope is based on a vector Hall sensor that consists of three separate Hall probes of an active area 5x5 .mu.m2, patterned on three sides of a GaAs pyramid. The top of the pyramid serves as a tunneling contact and helps to control the sensorůsample separation. The sensor and the sample are placed in a helium cryostat with a temperature control in the range 10ů300 K. The sensor scans an area up to 5x5 mm2 in the whole temperature interval with a spatial resolution ~5 .mu.m.
    Trvalý link: http://hdl.handle.net/11104/0101332