atto3DR

atto3DR

3-dimensional sample rotator module

in-situ eucentric two-axes sample rotation

turn single solenoid into strong 3D vector magnet

chip carrier socket with non-magnetic pogo pins

quick sample exchange with reliable contacts
resistive encoders for closed loop operation
program complex rotation schemes

The atto3DR double rotation module provides access to the full magnetic field (e.g. 9 T) in all directions relative to the sample surface. Thus, instead of rotating the magnetic field, the sample can be arbitrarily oriented with respect to a fixed external magnetic field vector. Featuring an eucentric rotation (i.e. the two axes of rotation intersect in the center of sample, which is fixed in space), this makes available a much larger phase space as compared to conventional vector magnets, where the field vector is rotated instead. The reason is that split coil configurations generally do not achieve such high field values, despite being significantly more expensive.

The module comes fully wired and equipped with a convenient leadless ceramic chip carrier (LCCC) socket with 20 contacts, making sample exchange a quick and easy task. All parts are non-magnetic, and are compatible with all attoCRYO setups with a 2” sample space and exchange gas cooling – whether it is a dry or a liquid setup. The atto3DR allows for rotation around a horizontally fixed axis, and an additional in-plane axis. This enables a ±90° tilt between sample surface and field, as well as another ±90° of in-plane rotation. Thus, any relative orientation between sample and field is accessible.

Cryogenic Tablet

Specifications

General Specifications
type of instrumenttransport measurement module for angledependent magneto-resistance measurements
sensor head specifics2 combined rotators with eucentric rotation*<br>*eucentric rotation: the two axes of rotation intersect in the center of the sample holder, which stays fixed in space during rotation
Sample Positioning
total travel rangefull 3D sphere via ±90° for both closed loop rotators (reserve: ±10°) <br>sensor resolution approx. 6 m°, repeatability approx. 50 m°, linearity approx. 1%
step sizeapprox. 1 m° @ 300 K, 0.5 m° @ 4 K
fine scan range40 m° @ 300 K, 6 m° @ 4 K (scan resolution: µ°)
sample holderASH/CC/20 fits 20 pin LCCC, connected to 20 wires as twisted pairs max. sample size 4.9 mm x 4.9 mm (others on request)
Suitable Operating Conditions
temperature range1.5 K..300 K (dependent on cryostat); mK compatible setup available on request
magnetic field range0..15 T+ (dependent on magnet)
operating pressuredesigned for He exchange gas
Suitable Cooling Systems
compatible cryostatsattoDRY2100, attoLIQUID2000
bore size requirementdesigned for a 2" (50.8 mm) cryostat/magnet bore
Compatibility
scan controller and softwareANC350 (for detailed specifications please see attoCONTROL section)
Options and Upgrades
sample holder upgradeASH/CC/24 fits 28 pin LCCC, connected to 24 wires (twisted pairs), max. sample size 7.8mm x 7.8mm or ASH/CC/28 fits 32 pin LCCC, connected to 28 wires (twisted pairs), max. sample size 6.7 mm x 6.7 mm
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