TY - JOUR
T1 - Development of a low-temperature insert for precise magnetization measurement below t = 2k with a superconducting quantum interference device magnetometer
AU - Sato, Yoshiaki
AU - Makiyama, Shun
AU - Sakamoto, Yasutaka
AU - Hasuo, Tadahiko
AU - Inagaki, Yuji
AU - Fujiwara, Tetsuya
AU - Suzuki, Hiroyuki S.
AU - Matsubayashi, Kazuyuki
AU - Uwatoko, Yoshiya
AU - Kawae, Tatsuya
PY - 2013/10/1
Y1 - 2013/10/1
N2 - We have developed a 9-mm-diameter 3He insert for precise magnetization measurements below T = 2 K that is attachable to a commercial superconducting quantum interference device magnetometer. The insert is made from a thin-walled stainless steel pipe with an inner diameter of 6.2 mm, which determines the maximum sample size. 3He gas is condensed in the pipe which is liquefied by 4He gas at T ∼ 1:8 K generated by the magnetometer via the heat exchanger of a Cu vacuum jacket with an outer diameter of 8.6mm soldered to the stainless steel pipe. The temperature of the insert is decreased to T∼ 0:5 K by evacuating liquid 3He using a rotary pump and then to T = 0:36 K with a sorption pump. From the diamagnetization signal of a superconducting Al chip with a mass below 0.1 mg, the magnetization resolution with the insert is confirmed to be less than 10-7 emu. To examine the performance of the insert, we measured the temperature dependence of the magnetic susceptibility and magnetization for Pr0:6La0:4Ag2In down to T = 0:4 K.
AB - We have developed a 9-mm-diameter 3He insert for precise magnetization measurements below T = 2 K that is attachable to a commercial superconducting quantum interference device magnetometer. The insert is made from a thin-walled stainless steel pipe with an inner diameter of 6.2 mm, which determines the maximum sample size. 3He gas is condensed in the pipe which is liquefied by 4He gas at T ∼ 1:8 K generated by the magnetometer via the heat exchanger of a Cu vacuum jacket with an outer diameter of 8.6mm soldered to the stainless steel pipe. The temperature of the insert is decreased to T∼ 0:5 K by evacuating liquid 3He using a rotary pump and then to T = 0:36 K with a sorption pump. From the diamagnetization signal of a superconducting Al chip with a mass below 0.1 mg, the magnetization resolution with the insert is confirmed to be less than 10-7 emu. To examine the performance of the insert, we measured the temperature dependence of the magnetic susceptibility and magnetization for Pr0:6La0:4Ag2In down to T = 0:4 K.
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U2 - 10.7567/JJAP.52.106702
DO - 10.7567/JJAP.52.106702
M3 - Article
AN - SCOPUS:84887257615
VL - 52
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
SN - 0021-4922
IS - 10 PART1
M1 - 106702
ER -