Beamline Phone Number:
+44 (0) 1235 778709
Principal Beamline Scientist:
Larissa Ishibe-Veiga
Tel: +44 (0) 1235 778869
E-mail: [email protected]
Email: [email protected]
Tel: +44 (0) 1235 778056
Samples can be:
Real time imaging remains possible from ~100 K to 1000 K.
The microscope operates using an high 15-20kV accelerating voltage applied between the sample surface and the first immersion lens at few mm distance. Any piece of electronic in contact with the sample cartridge must be located inside the high voltage (HV) rack and particular care must be taken to protect it from electrical discharges coming from the sample. Any additional equipment not already supplied by the beamline must be discussed with beamline staff well in advance.
The following in operando measurements can be performed, while imaging with PEEM:
Due to strong accelerating voltages, HV electrical sparks may occur at the surface and destroy samples. To limit their occurence on samples with patterned electrodes and sensitive channels, current pulses must be applied with the accelerating voltage switched off.
Cartridges for in-situ and in-operando measurements are listed below:
Uniaxial in-plane (<40mT in pulsed mode) and out-of-plane (<80mT in pulsed mode) magnetic fields can be applied. Please contact beamlime staff for more information.
In-plane uniaxial (left) and out-of-plane, PCB compatible (right) magnetic field cartridges.
The copper cartridges are optimised for cryogenic temperatures and mild annealings (100K < T < 400K). The pt100 thermoresistor accurately measure the sample temperature. The sample is mounted on an electrode that allows the application of out-of-plane electric fields (+/- 400V).
Out-of-plane electric field cartridge with temperature control (100K < T < 400K).
The standard version requires the sample to be glued on the cartridge and has four contact pillars as micro-bond contact pads (figure 1, left panel).The Printed Circuit Board (PCB) version, carries a PCB that can be separately used to micro-bond the sample.Both the standard and the PCB carriers allow 4 contacts to be made.
The tempearature-pulsing PCB cartridge has 2 contacts available for the sample. Temperature reading and control using a pt100 thermal sensor and a heating filament is possible in the range of 100-600K.
PEEM cartriges with Omicron plate adaptor.
In situ and in operando measurements are supported by full remote control of the following components:
UHV suitcase (compatible with Omicron plates).
Inert gas suitcase (compatible with Elmitec cartridges). The suitcase can be fitted inside a glovebox without the need of a docking port.
Diamond Light Source is the UK's national synchrotron science facility, located at the Harwell Science and Innovation Campus in Oxfordshire.
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