公开(公告)号：KR1020010050950A

公开(公告)日：2001-06-25

申请号：KR1020000059697

申请日：2000-10-11

Applicant: 스미토모덴키고교가부시키가이샤

Inventor： 구가이히로카즈 ,  마쓰이야스유키 ,  나가이시다쓰오키 ,  이토자키히데오

IPC: H01L39/22

CPC classification number: G01R33/0354 ,  H01L39/225

Abstract: PURPOSE: To provide an SQUID element having a step type Josephson junction which allows the cost down of elements and the use of a large-area substrate. CONSTITUTION: An oxide superconductor thin film pattern 20 is formed through a CeO2 buffer layer on a sapphire substrate 10 having a step 11 formed such that the step 11 traverses specified regions of a square thin film pattern 22 having an opening 23 at the center, and step type Josephson junction 26, 27 are formed at the regions where the step 11 traverses. Thus, an SQUID is obtained. The sapphire substrate is comparatively manufactured at a low cost and may develop a large substrate.

Abstract translation: 目的：提供具有阶梯型约瑟夫逊结的SQUID元件，其允许元件的成本降低和大面积基板的使用。 构成：通过具有台阶11的蓝宝石基板10上的CeO 2缓冲层形成氧化物超导体薄膜图案20，该步骤11形成为使得台阶11横穿中心具有开口23的方形薄膜图案22的指定区域，以及 阶梯型约瑟夫逊结26,27形成在台阶11横越的区域。 因此，获得SQUID。 蓝宝石基板以较低的成本进行比较制造，可能会形成大的基板。

公开(公告)号：KR1020010014704A

公开(公告)日：2001-02-26

申请号：KR1020000018170

申请日：2000-04-07

Applicant: 스미토모덴키고교가부시키가이샤

Inventor： 히라노테츠야 ,  나가이시타츠오키 ,  이토자키히데오

IPC: G05F1/565

CPC classification number: G01R33/0356 ,  Y10S505/846

Abstract: PURPOSE: Disclosed is an apparatus for adjusting a bias voltage of a SQUID (superconducting quantum interference device) which can automatically and appropriately adjust a bias current in a short time. CONSTITUTION: A 50 kHz sine wave current with an adjustable magnetic field bias applied by a magnetic field bias source(17) is sent to a coil(12), thereby generating a magnetic field to a SQUID(10). In this state, an output voltage is extracted from the SQUID(10). An amplitude of the magnetic field of the extracted output voltage is half a cycle of a magnetic field-voltage characteristic. The voltage is filtered by a filter(14) and only a 50 kHz component is extracted. The extracted signal component is rectified by a rectifier(15) and converted to a DC voltage. The magnetic field bias source(17) is adjusted to obtain a maximum value while seen through a voltage monitor(16).

Abstract translation: 目的：公开了一种用于调节SQUID（超导量子干涉装置）的偏置电压的装置，其可以在短时间内自动和适当地调整偏置电流。 构成：通过磁场偏置源（17）施加的具有可调磁场偏置的50kHz正弦波电流被发送到线圈（12），从而产生到SQUID（10）的磁场。 在该状态下，从SQUID（10）提取输出电压。 提取的输出电压的磁场的幅度是磁场电压特性的一半周期。 电压由滤波器（14）滤波，仅提取50kHz分量。 提取的信号分量由整流器（15）整流并转换成直流电压。 调整磁场偏置源（17）以通过电压监视器（16）看到的最大值。

公开(公告)号：KR1020000077237A

公开(公告)日：2000-12-26

申请号：KR1020000025273

申请日：2000-05-12

Applicant: 스미토모덴키고교가부시키가이샤

Inventor： 나가이시타츠오키 ,  히라노테츠야 ,  이토자키히데오

IPC: H03K17/92

CPC classification number: G01R33/0356 ,  Y10S505/846

Abstract: SQUID(10)에공급되는자속을일정량으로유지하는자속록을위한소정주파수(f)의변조전류를교류전원에서인가한다. 그상태에서 SQUID(10)에전류겸자장바이어스공급회로(11)로부터소정의바이어스전류를더한상태에서출력전압을추출하여, 그것을필터(13), 정류기(14)를거쳐전압모니터(15)에서모니터한다. 여기서필터(13)는교류전원에서인가한 40kHz의 2배의주파수성분인 80kHz 성분을추출하여그것을최대화한다. 그결과, 자장바이어스조정을용이하게행할수 있는 SQUID용변조구동회로의자장바이어스조정방법및 장치를제공할수 있다.