Download file (2.26MB)
Download as zip (2.22MB)

コレクション

引用

説明:

Cryogenic cooling technology, widely used in medical applications such as magnetic resonance imaging and other fields, relies heavily on critical resources, including helium gas and heavy rare-earth elements. With the growing demand for cryogenic cooling in the near future, the development of alternative technologies that do not depend on such scarce resources has become imperative. This study introduces cold storage materials, known as regenerator materials, made from abundant elements such as copper, iron, and aluminum. These regenerator materials function as Gifford-McMahon cryocoolers. By utilizing the significant magnetic heat capacity generated through the "spin frustration" effect—a phenomenon arising from competition among magnetic interactions—the regenerator material CuFe1₋xAlxO2 achieves cooling below the helium condensation temperature. Notably, its cooling capacity below 10 K shows performance comparable to conventional materials based on heavy rare-earth elements. This work shows the potential of using non-rare-earth magnetic materials as cryogenic regenerator materials and contributes to the development of environmentally sustainable cryogenic cooling technologies, paving the way for a cleaner and more sustainable future.

権利情報:

• Creative Commons BY Attribution 4.0 International
  

キーワード: cryogenic cooling, GM cryocooler, regenerator, spin frustration

刊行年月日: 2025-11-28

出版者: Springer Nature

掲載誌:

• Scientific Reports (ISSN: 20452322) vol. 15 issue. 1

研究助成金:

• JST JPMJTR24T1 (A-STEP)
• JSPS 22H00297 (KAKENHI)

原稿種別: 著者最終稿 (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6052

公開URL: https://doi.org/10.1038/s41598-025-29709-5

関連資料:

その他の識別子:

連絡先:

更新時刻: 2025-12-23 09:49:55 +0900

MDRでの公開時刻: 2025-12-23 12:19:50 +0900