Facilities for joint usage & joint research

Introduction of equipment

In Low Temperature Science Division, the various types of equipment in the list below are opened to all the staffs and students in Tohoku University for joint usage and joint research. We also have some devices available for lending.

■Equipment for Joint Usage

The machine time of SQUID (MPMS) can be booked through the web site. For the detailed information for joint usage of the facilities in Low Temperature Science Division, click here.

■Equipment for Joint Research

For consultation of joint research using the equipment below, make a contact to
Low Temperature Science Division (Katahira Campus) : ltcenter@imr.(※)
※ Please put "tohoku.ac.jp" at the end of the e-mail address.

■Lending Equipment

If necessary, make a contact to
Low Temperature Science Division (Katahira Campus) : ltcenter@imr.(※)
※ Please put "tohoku.ac.jp" at the end of the e-mail address.

Joint Usage Joint Research Lending
Joint Usage

VSM (Vibrating Sample Magnetometer) System
Place : Katahira classification : Joint Usage

[Specifications]
Oxford Instruments (MagLabVSM)
Maximum Magnetic Field : 14 T

Variable Temperature Range : 3.8-300 K

Noise Level : 2 × 10-6 emu
Resolution : 1 × 10-8 emu

Not available now.

SQUID Magnetometer -1
Place : Katahira classification : Joint Usage

[Specifications]
Quantum Design MPMS2

Maximum magnetic Field : 5.5 T

Variable Temperature Range : 1.7 K - 350 K
Resolution : 1 × 10-8 emu

Automatic DC magnetization measurements.

SQUID Magnetometer -2
Place : Katahira classification : Joint Usage

[Specifications]
Quantum Design MPMS XL
Maximum magnetic Field : 7 T

Variable Temperature Range : 1.7 K - 400 K

Resolution : 1 × 10-8 emu
Measurement method: DC, AC, RSO
Option : ETC, CLTC

Automatic DC, AC, RSO magnetization measurements.

Continuous cooling with passing through 4.2 K possible.

X-Ray Diffractometer
Place : Katahira classification : Joint Usage

[Specifications]
Rigaku RINT 2100 PC

Max. Power : 2 kW (60 kV, 50 mA)
Gonio Part : theta/2theta movement, theta single and
　　　　　　　2theta single
　　　　　Range : 2theta = -60-158°Precision: 0.002°
　　　　　Automatic alignment adjustment,
　　　　　Automatic variable slit
　　　　　monochrometer
Counter : NaI scintillation (above 700000 cps)

Option : rotating sample stand for thin film

　　　　　Laue camera (Polaroid film)

Analysis : automatic peak search
　　　　　multiplex peak separation
　　　　　Qualitative analysis (PDF2 card)　　　etc

Scanning SQUID microscope
Place : Katahira classification : Joint Usage or Joint Research

[Specifications]
Seiko Instruments Inc. SQM200

Variable emperature Range : 2 K - 90 K

Sensing coil diameter : 10 mm

Spatial resolution: 2 × 2 mm2

Measurements of magnetic field distribution at sample surface.

Joint Research

3He Cryostat insert
Place : Katahira classification : Joint Research

[Specifications]
Handmade

Sample space diameter : 25 mm
Lowest temperature : 340 mK (one shot)

　　　　　　　　　　　530 mK (continuous)
Time to lowest temperature : 2 hours from 1.5 K

Transport & DC magnetization measurements possible in combination with Faraday balance superconducting magnet system.

Top loading type 3He cryostat
Place : Katahira classification : Joint Research

[Specifications]
Oxford Instruments
a. Magnet

　Uniformity : 0.1 %/cm (Field stability less than 1 ppm/h)
　Max. Field : 8 T
　Max. Current : 114.1 A

　Diameter : 52.0 mm
b. Top loading 3He insert
　Sample Space Diameter : 38 mm
　Minimum temperature : 0.26 K (stable for 50 h)

Transport measurements in magnetic fields at 260 mK - 100 K possible.

Faraday balance superconducting magnet system
Place : Katahira classification : Joint Research

[Specifications]
Cryomagnetics Co.
a. Background magnet
　Uniformity : 0.1 %/cm (Field stability 1 ppm/h)
　Max. Field : 8 T

　Diameter : 63.5 mm

b. Gradient magnet
　Max. gradient : 6 T/m
　Linearity : 0.1 %/cm DSV

9/11T Superconducting magnet system
Place : Katahira classification : Joint Research

[Specifications]
Cryomagnetics Co.
a. NbTi Magnet
　Uniformity : 0.1 %/cm (Field stability 1 ppm/h)

　Max. Field : 9 T/11 T (11T , only the lambda plate works)
　Max. Current : 38.1/46.6 A

　Diameter : 63.5 mm
b. VTI (variable temperature insert)
　Sample Space Diameter : 45 mm
　Variable temperature range : 1.5 K-325 K (stability 0.1 K)

Transport measurements in magnetic fields at 1.5 K - 325 K possible.

Scanning SQUID microscope
Place : Katahira classification : Joint Usage or Joint Research

[Specifications]
Seiko Instruments Inc. SQM200
Variable emperature Range : 2 K - 90 K

Sensing coil diameter : 10 mm
Spatial resolution: 2 × 2 mm2

Measurements of magnetic field distribution at sample surface.

Lending Equipment

Leak detector -1
Lending division : Katahira

[Specifications]
LEYBOLD UL200

Detection performance : vacuum method or sniffer mode

Most detective sensitivity : 5×10-11 mbar L/s

Inlet port pressure : below 2 mbar
Start time : below 3 minutes

Internal pump : rotary & turbo molecular pump
Vent performance : above 1 l/s (Fine), 0.3 l/s (Gross)
Weight : 32 kg, caster attached

Leak detector -2
Lending division : Katahira

[Specifications]
OERLIKON LEYBOLD PhoeniXL 300
Detection performance : vacuum method or sniffer mode

Most detective sensitivity : 5×10-12 mbar L/s

Inlet port pressure : below 12 mbar
Start time : below 2 minutes

Internal pump : rotary (3.2 m3/h) & turbo molecular pump (70 l/s)

Vent performance : above 2.5 l/s (Fine), 0.4 l/s (Gross)
Weight : 40 kg, caster attached

Portable leak detector
Lending division : Katahira

[Specifications]
GL Sciences LD 229

Detection method : comparative thermal
　　　　　　　　　　conductivity measurement
Most detective sensitivity : 0.01 mL/min
Power : rechargeable battery, 5 hours operation time

Recharge time : 3 hours

Weight : 310 g

Mainly used for checking the helium gas leak from pipe lines.

Seal-off valve pump adapters
Lending division : Katahira

[Specifications]
Connection types of seal-off valve :
　　(1) 16 mmf simple pipe

　　(2) 21 mmf simple pipe

　　(3) 35 mmf simple pipe
　　(4) NW40 flange

Connection to pump: NW25 flange (all)

Used for pumping adiabatic space of the transfer tubes, the helium containers or the dewars with seal-off valves.