Development of a low-temperature insert for precise magnetization measurement below t = 2k with a superconducting quantum interference device magnetometer

Yoshiaki Sato, Shun Makiyama, Yasutaka Sakamoto, Tadahiko Hasuo, Yuji Inagaki, Tetsuya Fujiwara, Hiroyuki S. Suzuki, Kazuyuki Matsubayashi, Yoshiya Uwatoko, Tatsuya Kawae

研究成果: Contribution to journalArticle査読

13 被引用数 (Scopus)

抄録

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.

本文言語英語
論文番号106702
ジャーナルJapanese journal of applied physics
52
10 PART1
DOI
出版ステータス出版済み - 10 1 2013

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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