양자물질초전도연구소 홈페이지 입니다.

    ◈ Dilution Refrigerator


Dilution Refrigerator

- Equipment can reach 10mK using He 3 or He 4 mixture.

- To avoid noise from building, the dewar is buried.

Temperature Range : 10mK ~ 300K

    ◈ RMC 1K (Liquid He4 pumping system)

RMC 1K (Liquid He4 pumping system)

- The equipment can reach below to 1.4K. by removing latent heat from the evaporating liquid helium.

- Experiments done using the pressure cell is easier than other equipment.

Temperature Range : 1.4 ~ 300K

    ◈ PPMS(Physical Property Measurement System)

PPMS

- PPMS can measure magnetic susceptibility, resistivity and other physical properties of materials

- Measurements done are similar to the CCR but it use liquid helium and nitrogen with less noise and lower temperature

- Superconducting magnet is installed inside which applies magnetic field to samples

Temperature Range : 1.8 ~ 300K
Field : ~ 9T

    ◈ MPMS(Magnetic Property Measurement System)


MPMS

- Equipment to measure the magnetization of materials, as function of temperature and magnetic field.

Temperature Range : 1.8 ~ 300K

    ◈ Vector Magnet

Vector Magnet

- It apply magnetic field to sample to measure magnetic properties

- It can change direction of applied magnetic field (y and z axis)

- To avoid noise from building, the dewar is buried.

Temperature Range : 10mK ~ 300K
Field(y axis) : ~5T
Field(z axis) : ~9T

    ◈ CCR(Closed Cycle Refrigerator)

New CCR(Above) & Old CCR(Right)

- CCR can measure magnetic susceptibility, heat capacity, resistivity and superconductivity of materials

- Experiments are done at vacuum environment which helps lowering the temperature of the CCR to 4~8K

- Reaching base temperature is done by the procedure of compression

Temperature Range(New CCR) : 4 ~ 300K
Temperature Range(Old CCR) : 8 ~ 300K

    ◈ Liquefier

Liquefier

- Helium gas which comes from other measurement equipments(i.e. CCR, PPMS etc) is stored inside dewers and compressed. This compressed Helium gas is liquified into Liquid Helium which can be used for future experiments.