VSM Options and Accessories
Automatic Sample Rotation
The automatic sample rotation option allows you to measure the sample at different angles relative to the magnetic field. The VSM software can automatically change the angle between -400 and + 400 deg with a resolution of 0.05º.
You can program a sequence of measurements performed at different angles or you can do for example angle dependent remanence measurements etc.
3 different sample temperature control options are offered. All temperature options have in common that they are installed on a slide and mounted permanently on the measurement system. This allows you to simply slide the temperature option in place when it is needed or out of the way when you plan to do room temperature measurements. No cables or tubes need to be connected or disconnected when switching back and forth.
Because of the small OD of the temperature chambers, the field homogeneity is always excellent and because of the low noise at the gap required for the temperature chambers, most users will rarely feel the need to adjust the magnet gap. This makes switching to and from a room temperature configuration very easy and quick when compared to competing systems.
||77K + 100K - 1000K
||LN2, N2, AR
||300K - 1273K
||4.2K, 6K - 450K
||LHE or LN2
Maximum field with the EV1-LNA temperature option in place
This option is the most commonly used temperature option in the EV systems. It offers a temperature range from 77K + 100K to 1000K without the need to switch hardware.
The large ID of the temperature chamber allows for samples with a 2.5x larger surface area or volume than in most competing systems. This combined with a 2x lower system noise gives the EV VSMs with the EV1-LNA option 5x better Signal to Noise Ratio than most competing systems.
This offers a temperature range from 4.2K + 6.5K to 450K without the need to switch hardware. When used with an optional liquid nitrogen Dewar this system can also be used with liquid nitrogen from 90K to 450K.
The large 9 mm ID of the temperature chamber allows for samples with an almost 2 x larger surface area or volume than in most competing systems. This combined with a 3x lower system noise gives the EV VSMs with the EV1-LHE approximately 6x better Signal to Noise ratio compared to competing systems.
Vector Coils Option
The vector coil option allows the simultaneous measurements of the X and Y components of the magnetization vector. The minimum system noise with the vector option is below 1 µemu and the maximum field with the vector option is 30-40% higher than in competing systems. The vector coil option is fully compatible with the different temperature options.
The maximum field with the vector option in place:
EZ1- SWP Sweeping field measurement option
The standard measurement mode in the VSM uses field stepping; the field comes to a complete stop before a measurement point is taken. This gives the most accurate measurement of many of the magnetic parameters. Adding the Sweep field measurement option enables the system to measure data continuously while the field is being swept. This provides up to 60 data points per second, allowing for even faster measurement times and more data points per measurement.
MicroSense offers true torque magnetometers both as an option to the EV VSM systems and as a standalone system (ET7, ET9 and ET11 systems).
Unlike other measurement systems that strive to determine torque and anisotropy from vector VSM systems, the MicroSense Torque system actually measures the force (torque) on the magnetic sample and from that it accurately determines the Magnetic Anisotropy. Not only is this more accurate, it is also more than 10x more sensitive. Besides this the maximum field is approximately 60% higher than in competing vector coil based torque magnetometer.
The magneto-resistance option provides for a 4 point probe for measuring the field, temperature and angle dependent behavior of the resistance of a sample. This option can be used together with the EV1-LNA option up to 400 °C and does not require the removal of the vector option (if that is installed).