DXV-9000VSM-2
DXV-9000VSM-1

Magnetic Moment Measurement Equipment

Functions and Features

 

◆ Magnetic hysteresis loop (M-H) can be tested to obtain coercive force, remanent magnetization and saturation magnetization, moment and other parameters;
◆ M-T curve can be tested, and the superconducting transition can be obtained with the low-temperature option, Curie temperature point can be obtained with the high-temperature option;
◆ The whole series is equipped with a 360 ° continuous electric rotating vibration head as standard, and the sample has been rotated continuously;
◆ It is located at the center of the collecting coil and magnetic field; compared with the superconducting magnet, VSM is more convenient for anisotropic research;
◆ The specially designed adjustment method of the electromagnet pole gap ensures that the sample no longer needs to adjust the center in the left and right directions; the exact mechanical design ensures that the sample is in the front and back direction center of the collection coil every time; the new concept of electric lifting system can automatically adjust the center position of the sample in the up and down directions; the design of the above three aspects can greatly improve the accuracy of the test The complex, time-consuming and rough sample centering process of traditional VSM system is eliminated due to its high degree and repeatability;
◆ The test speed is revolutionary accelerated. It can continuously collect the magnetic moment, magnetic field and temperature value at 10ms to ensure that the user can capture any details that change rapidly during the test process. The change rate of the electromagnetic field is as high as 5000 Oe/ s, which is impossible for the superconducting magnet. Under this high-speed change rate of magnetic field and high-speed data acquisition rate, 14s It can get a hysteresis loop and support the test of the first order inversion curve (FORC);
◆ By introducing a high-precision laser displacement sensor, the amplitude variation of 1 μm can be distinguished, and a closed-loop control can be formed with a specially customized sample vibration drive system, which can achieve the stability of 8 mm amplitude for a long time(24h) of 4/10000(4 μm);
◆ The replacement and alignment device of the integrated design of the option no longer has the risk of breaking the sample bar of the traditional VSM, and ensures that the sample vibrates vertically on the ground without "hitting the wall"; the high and low-temperature option also supports the vector magnetic moment test;
◆ The sample pole electric signal lead of patented technology is convenient for introducing an electric field in magnetic measurement;
◆ The integration of the magnetic moment signal collection coil and the Gauss meter probe makes the space less, the installation more convenient and the cable more reliable;
◆ It has a patented design, simple operation of single-hand sample replacement, and a human-computer interface for one key software test;
◆ Material to be measured:
Diamagnetic, Paramagnetic, Ferromagnetic, Ferrimagnetic, Antiferromagnetic materials and Anisotropic materials
Particulate and continuous magnetic recording materials and GMR, CMR, exchange biased and spin valve materials,
Magnetic-optical materials, Bulk materials, powders, thin films, single crystals, and liquids are readily accommodated;
◆ System software with a friendly interface and convenient operation.

 

software interface of DXV-9000

software interface

 

 

Technical Specifications:

 

Moment noise @0.1s/pt

Moment noise @1s/pt

Moment noise @10s/pt

 

Magnetic Moment Measurement

Noise

0.1s/pt(RMS)

0.1s/pt(P-P)

1s/pt(RMS)

1s/pt(P-P)

10s/pt(RMS)

10s/pt(P-P)

Room Temp. @3.5mm

150μemu

800μemu

80μemu

380μemu

35μemu

80μemu

High or low temperature @8mm

20μemu

90μemu

15μemu

35μemu

10μemu

9μemu

Note: RMS is the root-mean-square value of data within 10 minutes, and p-p is the peak-peak value of data within 10 minutes

Measuring Range

35*10-9 to 103 emu

Stability

±0.05% of full scale/day (fixed coil spacing, Data obtained 24 hours after thermal equilibrium at a relative maximum range of 2 hours at constant temperature and magnetic field.)

Repeatability

± 0.5%  (data obtained by loading and removing samples ten times in the same coil spacing and range)

Accuracy

± 1%, (compared with NIST 772a standard sample)

Sample Quality

0 to 10g (the larger mass sample will cause amplitude reduction, resulting in a reduction in signal-to-noise ratio)

Other parameters The system adopts an interval of 0.01-10s (continuous mode 10ms), the lock-in amplifier time constant is fixed at 100ms, the low-pass steep drop is 24dB/oct, the vibration amplitude is 2-8mm, and the vibration frequency is 55-85Hz.

 

Magnetic Field

Sample Temp.

Air Gap

Sample Area

DXV-9005

DXV-9007

Room Temp.

7.5mm

3.5mm

2.7T

3.0T

12mm

8mm

2.4T

2.6T

H and L Temperature

25mm

8mm

1.95T

2.2T

High and low temperature integration

28mm

8mm

1.9T

2.1T

Magnetic Field Characteristics

Sample lifting &rotating

Accuracy

1%

Lifting accuracy

0.1mm

Resolution

1 mOe

Lifting Range

0 to 300mm

Repeatability

100 mOe

Accuracy

0.01°

Rate of change 5000 Oe/s Rotating Range continuous

 

 

Configurations of Goods of DXV-9005 Magnetic Moment Measurement Equipment

 

No.

Part Name

Model No.

Qty

Application

1

Variable Gap Electromagnet

DXSB-130

1

Generating Field

2

Electromagnet Bipolar Power Supply

DXEP-7050

1

For Electromagnet

3

Locking Amplifier

 

1

Data. Acquisition

4

Vibrating Head

 

1

Vibrating

5

Sample Rod

 

1

Extend the samples

6

Sample Holder

 

10

Contain samples

7

Sample Fixture

 

10

For film samples

8

Vibrating Head Support

 

1

Support the vibrating head

9

Cabinet

 

1

For meters

10

Calibration Sample

 

1

Calibrating moment

11

Computer

 

1

For software

12

Chiller

RG0309

1

Cooling electromagnet and power supply

13

High Temperature System

RT-873K

1

 

14

Low Temperature System

80K-350K

1

IN DEVELOPING

 

 

Configurations of Goods of DXV-9007 Magnetic Moment Measurement Equipment

 

No.

Part Name

Model No.

Qty

Application

1

Variable Gap Electromagnet

DXSB-178

1

Generating Field

2

Electromagnet Bipolar Power Supply

DXEP-9060

1

For Electromagnet

3

Locking Amplifier

 

1

Data. Acquisition

4

Vibrating Head

 

1

Vibrating

5

Sample Rod

 

1

Extend the samples

6

Sample Holder

 

10

Contain samples

7

Sample Fixture

 

10

For film samples

8

Vibrating Head Support

 

1

Support the vibrating head

9

Cabinet

 

1

For meters

10

Calibration Sample

 

1

Calibrating moment

11

Computer

 

1

For software

12

Chiller

RG0309

1

Cooling electromagnet and power supply

13

High Temperature System

RT-873K

1

 

14

Low Temperature System

80K-350K

1

IN DEVELOPING

 

 


 

 

Basic options

 

cryostat and high-temperature furnace of VSM

 

Magnetic field temperature (Fe-Co pole option)

Sample Temp.

Air Gap

Sample Area

DXV-9005

DXV-9007

Room Temp.

7.5mm

3.5mm

2.87T

3.20T

12mm

8mm

2.59T

2.76T

High and low temperature integration

25mm

8mm

2.23T

2.53T

High integration

28mm

8mm

1.98T

2.23T

 

Temperature options
  Low temperature High temperature
  80K to 370K 350K to 1050K
Temperature resolution 0.001K ±0.1K
stability ±0.1K ±1K
Temperature change time and rate 15min min 6k/min max 35min min 20K/min max
sample environment flowing nitrogen static argon
insulation layer vacuum Vacuum, and multi-layer insulation materials
Outside diameter and sample space φ19mm, φ8mm φ19mm, φ8mm

 

 

Sample Holder

 

sample holder of dxv-9000 vsm

 

Room temperature and low temperature sample rod (Carbon fiber)

No.

Sample

Max. Sample Size (mm)

91001

block

Φ4*10

91002

powder

Φ4*10

91003

Film, out of plane

10*6.4

91003m

Film, out of plane

10*2.5

91004

Film, in plane

6.4*10

91004m

Film, in plane

2.5*10

91005

liquid

Φ2.5*10

 

High temperature sample rod (quartz)

No.

Sample

Max. Sample Size (mm)

91011

block

Φ4*10

91012

powder

Φ4*10

91013

Film, out of plane

10*6.4

91014

Film, in plane

6.4*10

 

 


 

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DXV-9000 Magnetic Moment Measurement Equipment is the first domestic commercial VSM whose magnetic moment measurement noise reaches the 10⁻⁸ emu level (4 × 10⁻⁸ emu noise floor at 10 s/point).
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