Material Properties of a Low Contraction and Resistivity Silicon-Aluminum Composite for Cryogenic Detectors
Material Properties of a Low Contraction and Resistivity Silicon-Aluminum Composite for Cryogenic Detectors
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低温探测器用低收缩低电阻率硅铝复合材料的材料特性
DOI：
10.1007/s10909-022-02795-9
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发表时间：
2022
影响因子：
2
通讯作者：
Oshima Tai
中科院分区：
文献类型：
--
作者：
Takekoshi Tatsuya;Lee Kianhong;Chin Kah Wuy;Uno Shinsuke;Naganuma Toyo;Inoue Shuhei;Niwa Yuka;Fujita Kazuyuki;Kouchi Akira;Nakatsubo Shunichi;Mima Satoru;Oshima Tai
我们报道了一种低收缩硅铝复合材料的低温性能，即日本精细陶瓷SA001，用作低温硅器件的封装结构。SA001是硅铝复合材料(硅体积分数为75%)，热膨胀系数低(铝的1/3)。测得SA001的超导转变温度为1.18℃，与纯铝的超导转变温度一致，可作为超导磁屏蔽材料。SA001的剩余电阻率为0.065微米Ωm，大大低于同等的硅铝复合材料。测得的SA001在液氮中的热收缩速率与由硅和铝的体积加权平均得到的预期收缩速率一致。SA001的可加工性也通过一个壁厚为100微米的锥形馈电喇叭阵列的制造得到了证实。这些特性适合于大尺寸超导探测器器件的封装应用。
We report on the cryogenic properties of a low-contraction silicon–aluminum composite, namely Japan Fine Ceramics SA001, to use as a packaging structure for cryogenic silicon devices. SA001 is silicon–aluminum composite material (75% silicon by volume) and has a low thermal expansion coefficient (1/3 that of aluminum). The superconducting transition temperature of SA001 is measured to be 1.18 K, which is in agreement with that of pure aluminum and is thus available as a superconducting magnetic shield material. The residual resistivity of SA001 is 0.065 µΩm, which is considerably lower than equivalent silicon–aluminum composite material. The measured thermal contraction of SA001 immersed in liquid nitrogen is, which is consistent with the expected rate obtained from the volume-weighted mean of the contractions of silicon and aluminum. The machinability of SA001 is also confirmed with a demonstrated fabrication of a conical feedhorn array, with a wall thickness of 100 µm. These properties are suitable for packaging applications for large-format superconducting detector devices.