8600 Series Options

86-SSVT single-stage variable temperature option with GlideLOCK™ alignment system (8604/8607 only)

The single-stage variable temperature assembly allows you to take measurements from 100 K to 950 K using LN₂, nitrogen, and argon gas. A single-point measurement can be taken at 77 K. The fully automated 705 gas controller permits the user unattended operation from high to low temperatures, eliminating the need to remove or resaddle your sample. This ensures accurate measurements throughout the full operating range. Rapid cooldown from 950 K to room temperature and from room temperature to 100 K provides efficiency and high throughput. Like our full suite of variable temperature options, the single-stage variable temperature option utilizes the GlideLOCK alignment system to simplify option insertion and produce repeatable sample saddling, ensuring optimum noise floor. Designed to deliver superior thermal performance, the unit’s vacuum insulation prevents freeze over at low temperatures and can operate safely at high temperatures without the risk of damaging neighboring components.

Included with the 86-SSVT:

1. Single-stage variable temperature insert with GlideLOCK mount
2. 25 L LN₂ Dewar with condenser stand
3. LN₂ transfer line with condenser assembly
4. Instrument cables
5. Sample rods and holders
6. Wall mount bracket to store option when not in use

Supplemental 86-SSVT equipment requirements

1. Lake Shore 86-VTA variable temperature option kit
2. Lake Shore 705 gas controller
3. Argon gas cylinder with 344 kPa (50 psi) gas regulator and 3 mm hose barb (can also be a ¼ NPT female fitting)
4. Nitrogen gas cylinder with a 344 kPa (50 psi) gas regulator and 3 mm hose barb (can also be a ¼ NPT female fitting)
5. LN₂ source to fill the provided Dewar
6. Clean compressed air (276 kPa [40 psi])
7. Lake Shore TPS-FRG compact turbo pumping system (required for full automation) or mechanical vacuum pump (E2M or equivalent) kit providing sample space blank off pressure of <0.67 Pa (5 × 10^-3 Torr) for routine operation
8. Turbomolecular vacuum pump (Lake Shore TPS-FRG or equivalent) kit for cryogen transfer line maintenance—can also be used in place of the E2M rotary vacuum pump
9. A Pirani or thermocouple vacuum gauge capable of measuring pressures from 0.1 to 100 Pa (10^-3 to 1 Torr)

86-OVEN/8610-OVEN high-temperature oven with GlideLOCK™ Alignment System

The high-temperature oven enables the 8600 Series VSM to be used to investigate materials at high temperature. It consists of an electrically heated outer tube assembly with thermal insulation for sample-zone temperatures from 100 °C to 1000 °C (373 K to 1273 K). Temperatures from 30 °C to 1000 °C (303 K to 1273 K) are also possible, however, below 100 °C (373 K) measurement time increases. Argon gas inside the sample chamber enhances heat flow with the sample. For the 8604 and 8607, a 705 gas controller can be added as an option to automatically stop the argon feed after the measurement is completed, but the 705 is not required for the 86-OVEN option.

The sample zone chamber is lined with a heat-resistant and intrinsically non-magnetic material. The provided sample holder consists of a quartz tube sample rod attached to a boron-nitride sample cup. In the 8604/8607, the 86-OVEN cryostat uses the GlideLOCK alignment system to simplify insertion and produce repeatable sample saddling and optimum noise floor. To accommodate the oven within the magnet, magnet index 5 is required. A mechanical vacuum pump capable of maintaining inlet pressures down to 0.67 Pa (5 × 10^-3 Torr) must be supplied by the user.

The efficient thermal insulation consists of an evacuation outer chamber with multiple reflective heat shields. Sample zone temperatures as high as 1000 °C are attained with a power consumption of approximately 70 W. Two results of the low power consumption are minimal magnetic interference and increased temperature uniformity in the sample zone. The oven is particularly well suited to measuring Curie temperatures of ferromagnetic or ferrimagnetic materials at temperatures up to 1000 °C. The sensitivity of the VSM permits Curie temperature determinations at relatively low field intensities, allowing more inherently accurate determinations.

At room temperature and above, measurements may be performed on samples contained in an argon atmosphere to protect the sample from oxidation.

Included with 86-OVEN/8610-OVEN:

1. Oven assembly with mount
2. Nickel Curie sample cylinder
3. Instrument cables and related accessories
4. Sample rods and holders

Supplemental 86-OVEN/8610-OVEN equipment requirements

1. Lake Shore 86-VTA or 8610-VTA temperature option kit
2. Lake Shore 705 gas controller (optional, but not required for the 8604/8607)
3. A mechanical vacuum pump (Lake Shore E2M or similar) capable of achieving a blanked-off pressure below 0.67 Pa (5 × 10^-3 Torr) and a pumping speed of 1 m³/h, along with a KF-16 flange pump inlet
4. Argon gas cylinder with 5 to 10 psi regulator and 3 mm (1/8 in) hose barb

86-CRYO/8610-CRYO variable temperature cryostat with GlideLOCK™ alignment system

This VSM cryostat is designed for rapid sample cooling with either LHe or LN₂ as well as easy sample insertion and interchange. It allows you to take measurements from 5.5 K to 420 K using LHe and from 85 K to 420 K using LN₂. A single-point measurement can be taken at 4.2 K (LHe) and at 77.6 K (LN₂). The sample is suspended in a proprietary insulated tube constructed of nonmagnetic material.

The cryostat design provides the user the capability to perform measurements economically over nearly the entire accessible temperature range with a single cryostat. The transfer line is included.

Included with 86-CRYO/8610-CRYO:

1. Combination LHe/LN₂ cryostat with GlideLOCK mount
2. LHe/LN₂ transfer line
3. Cryogen transfer kit
4. Instrument cables and related accessories
5. Sample rods and holders
6. Wall mount bracket to store option when not in use

Supplemental 86-CRYO/8610-CRYO equipment requirements:

1. Lake Shore 86-VTA/8610-VTA temperature option kit
2. A mechanical vacuum pump (Lake Shore E2M or similar) capable of achieving a pressure below 0.67 Pa (5 × 10^-3 Torr) and a speed of 1 m³/h, along with a KF-16 flange pump inlet
3. Access to a turbomolecular vacuum pump (Lake Shore TPS-FRG or similar) capable of doing better than 1.33 × 10^-3 Pa (10^-6 Torr) for annual evacuation of transfer line vacuum space
4. N₂ storage Dewar (Lake Shore 1220-50 or similar) with top withdraw fitting to accept the 12.8 mm (0.5 in) diameter transfer line—the transfer line furnished with the 86-CRYO cryostat is particularly well adapted for use with 25 to 60 L storage vessels, and can be readily adapted to other capacity storage vessels (in most cases, a LHe Dewar will be provided by your local liquid gas distributor when LHe is delivered)
5. Gas cylinder with 1 to 5 psi pressure regulator to deliver clean, dry helium or nitrogen gas (depending on liquid cryogen)

86-VTA/8610-VTA temperature option kit

The autotuning cryogenic temperature controller is used to measure and control our full suite of variable temperature options. The 86-VTA (for the 8604 or 8607) includes a Lake Shore temperature controller, thermocouple input card (when purchased for use with the high-temperature oven or single-stage variable temperature assembly), GlideLOCK alignment system mount, vacuum handling kit, mounting hardware, flanges, hoses, connectors, and accessories. The 8610‑VTA includes a Lake Shore temperature controller, thermocouple input card (when purchased for use with the high-temperature oven), vacuum handling kit, mounting hardware, flanges, hoses, connectors, and accessories. Note: only one 86/8610-VTA is required for all variable temperature options.

705 gas controller

The 705 gas controller was specifically designed to automate the gas handling for the temperature options. The 705 operation is controlled by the 8600 Series software and allows the user to have unattended operation from 4.2 K to 1273 K. In addition, when used in conjunction with the TPS-FRG turbomolecular pump, the 8600 system also monitors the vacuum space surrounding each temperature option to ensure insulation.

86-VEC

The vector option extends the measurement capabilities of the 8604 or 8607 to facilitate investigations of anisotropic magnetic materials, allowing you to determine their vector magnetization components and susceptibility tensor. When used in combination with autorotation, the vector coils provide information that is essentially identical to that provided by a dedicated torque magnetometer. The vector coils mount directly to the 86-VTA option for use with all temperature options or can be mounted to the 86-VEC-MOUNT (sold separately) for room temperature measurements. For more information, please read our related app note.

86-VEC-MOUNT

The vector option mount is used to mount the vector coils in the magnetic gap of the 8604 or 8607 when room temperature measurements are desired.  For measurements in conjunction with a temperature option, the vector coils mount directly to the 86-VTA.

TPS-FRG turbomolecular vacuum pump station

Used to annually evacuate the cryogen transfer line of the optional cryostat and single-stage variable temperature assembly (transfer line and kit are included with these options), the TPS-FRG provides vacuum to 1.33 × 10^-3 Pa (10 ^-6 Torr). In addition to annual cryogen transfer line maintenance, the turbomolecular vacuum pump can also be used in place of the E2M rotary vacuum pump for evacuating the cryostat vacuum space.

Recirculating chillers

Lake Shore offers NesLab^® recirculating chillers in order to provide a complete laboratory solution. The NesLab chillers feature a CFC-free refrigeration system.

The refrigeration system uses a hermetically sealed compressor and hot gas bypass system of temperature control. This system eliminates on/off cycling and premature wear of the compressor. Strong pumps provide continuous flow even through cooling lines with small IDs.