仪器简介:
1) 仪器组成:
a) 恒流源及主机Constant current source supply system – Mainbody.
- Weight : 10kg (Approximately)
- Size : 43 x 42 x 15cm.
b) 自动换向磁体组Automatically moving Permanent magnet set by motorizing system.
- Weight : 15kg.
- Size: 70 x 24 x 11cm
c) 样品固定板Sample mounting board part.
- Spring clip type sample mounting board
- Gold coated- phosphor bronze.
- Heater embedded inside to raise the temperature.
- Temperature sensor attached on sample board, to detect real time temperature.
d) 圆形液氮槽Round LN2 tank – For the purpose of keeping LN2 temp.
e) 方形液氮槽Square LN2 tank – For the purpose of keeping LN2 and located in the center of both round magnet.
f) 漏斗 Funnel for liquid nitrogen
g) 测量电缆 Measuring cable – 5 q’ty. It is for connection between mainbody system and magnet kit.
h) USB数据通信电缆 USB cable. – to communicate between PC and mainbody system.
i) 电源电缆 Power cord cable.
j) 参考样品 Reference sample 2pcs – 1pc(ITO) plus 1pc(GaN or GaAs ) which is variable as per temperature change.
k) 测试报告 Test results report.
l) 手册 Manual book.
m) 软件CD Operating s/w program CD.
n) 真空瓶 A vacuum bottle - For use of keeping LN2 and flowing into LN2 tank
o) 欧姆接触材料InSn In95%Sn5% 5g – 1 bottle.
p) 工具 L wrench(Hexa wrench) - For use of locking in and out magnet movement.
技术参数:1, 综合技术规格:
• zei大样品尺寸Maximum sample size : 20mm x 20mm
• 测量温度范围Measurable Temperature: 80K ~ 350K
• 温度控制准确度Accuracy of temp: ±0.5dC.
• 每温度点测试时间One time whole Measurement speed : 15second.
• 降温到80K所需时间Cool-down time to 80K : Within 10min.
• 测量材料Measurement Material: All semiconductors including Si, SiGe, SiC, GaAs, InGaAs, InP, GaN (N Type & P Type can be measured).
Data input of depth enables comprehensive measurement of the whole material.
• 电阻率范围Resistivity Range : 10-4 to 107 (Ohms-cm)
• 迁移率Mobility: (cm2/Volt-sec) 2 ~ 107 (including low temperature)
• 载流子浓度Density (cm-3): 107 ~ 1021
• 磁体Magnet: Permanent magnet (diameter: 50 mm)
• 磁通量密度Magnet Flux Density: 0.55 Tesla ±0.02T.
• 磁体稳定性Stability: 0.2% over 1 years
• 磁通量均匀性Uniformity: +/- 1% over 20mm diameter from center
• Standard field strength 0.55 Tesla,
• 磁体移动方式Movement: Automatically moving N⇒S and S⇒N, by motorizing system.
• 包装箱Finally packed in overseas wooden crate : Net Weight: 32 Kg, Gross weight: 52kg.
Dimensions: 86 x 67 x 63 cm
2、恒流源规格 Current source:
• 输入电流范围Applying input current Range: 1nA - 20mA
• 电压Compliance: 12V
3、电压测量规格 Voltage measurements:
• 输入阻抗Input impedance: 2x107
• 输入电压范围Input voltage range: +/-12V
• 电压准确度Voltage accuracy: ±2uV.
• 样品固定Sample input: Mounting on Sample board.
• 接触转换Contact switching: Mechanical Relay
主要特点:仪器特点 Features:
a) 电阻率测量范围宽,适用于低阻抗及高阻抗半导体薄膜 Low and high resistivity measurement capability,
b) IV曲线、IR曲线测量 IV(Current vs Voltage), IR(Current vs Resistance) curve plotting.
c) 连续变温测量(80K-350K), 无节点 Measuring in variable temperature.
- 温度-载流子浓度曲线 temp vs bulk concentration,
- 温度-迁移率曲线 temp vs mobility,
- 温度-霍尔系数系数 temp vs Hall coefficient,
- 温度-电阻率曲线 temp vs resistivity,
- 温度-电导率曲线 temp vs conductivity in semiconductors.
d) 直流测量模式 DC measurement modes
e) 范德堡及霍尔Bar测量 van der Pauw and Hall Bar measurements
f) 板系统 Board system ( 80K to 350K )
变温霍尔效应测量仪(80K-350K),HMS-5000
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