NanoMOKE3

Applications

• Magnetic nanotechnology
• Magnetic Random Access Memory (MRAM)
• Recording heads
• Patterned magnetic media
• Spintronics / magneto-electronics
• GMR / TMR
• Thin film magnetism
• Magnetic field sensor

Features and Benefits

• Ultra-high sensitivity and stability combined with very low noise: reflectivity changes smaller than 0.02% and polarisation changes small than 0.5 mdeg can be detected with a measurement time of just a few seconds.

• Highly focused laser spot: depending on the objective lens selected, the laser spot can be focused to as small as 2?m. This allows hysteresis loops to be measured from small numbers of nanostructures selected out of an array, high hysteresis loop sensitivity to be achieved in single isolated nanostructures or sharp domain images to be captured.

• Advanced laser rastering mirror system: built on technology developed for confocal microscopy and optical coherence tomography, NanoMOKE3® includes a pair of high speed precision galvanometric mirrors which move the focused laser beam under computer control. This allows measurements to be made from precisely defined positions on the sample surface and for imaging by rapid rastering of the laser. This eliminates the traditional divide between Kerr magnetometers and Kerr microscopes: NanoMOKE3® is a true hybrid, offering excellent performance in each role.

• Excellent scanning laser microscope imaging quality: bright, sharp images can be taken in polar Kerr, longitudinal Kerr and reflectivity contrast modes. Frame rates of up to 4 frames per second allow domain images to be viewed in real time; photographic capture quality allows a publishable quality image to be recorded in 7 seconds.

• Fast and flexible CCD-based imaging: Kerr (crossed-polarizer) and reflectivity imaging can be captured using a high-sensitivity CCD sensor. Data can be captured as fast as 30 frames per second (45 FPS for 8-bit data), at full photographic quality (512 x 512 pixels). Exposure time and frame rate can be set by the user for the optimum balanced between imaging speed and low noise in their application.

• Fully automated integrated optics: no laser beams or optics to align. Simply insert the sample, adjust the focus, null the detector and start using the software.

• Extendable and interoperable: auxiliary electronic inputs and outputs allow NanoMOKE3® to be connected electronically to your own experiments. The auxiliary laser input port allows NanoMOKE3® to use an existing laboratory laser instead of the built-in laser. Different objective lens can be selected from a wide range to fit resolution, field of view and working distance according to the experimental needs. Most third-party cryostats, cryogen-free cryocoolers and electromagnets can be successfully interfaced.

• Supplied with LX Pro 3strong>, our easy to use and flexible control software. LX Pro 3 allows the laser to be moved so as to locate specific areas, allows complex applied field patterns to be easily generated, records hysteresis loops and allows postprocessing of the loops to filter noise, remove artefacts and automatically measure key loop parameters such as coercivity and remanence. It also allows real-time display of images during rastering, capture of photographic quality images and basic image processing such as contrast-brightness correction and profile measurement. LX Pro 3 also includes a macro language which can be used to interface NanoMOKE3 ® to other software routines that you may wish to write and to automate complex measurements.