公开(公告)号：US5047385A

公开(公告)日：1991-09-10

申请号：US221726

申请日：1988-07-20

申请人： Malcolm R. Beasley ,  Kookrin Char ,  Theodore H. Geballe ,  Robert H. Hammond ,  Aharon Kapitulnik ,  Andy Kent ,  Michio Naito ,  Byungdu Oh

发明人： Malcolm R. Beasley ,  Kookrin Char ,  Theodore H. Geballe ,  Robert H. Hammond ,  Aharon Kapitulnik ,  Andy Kent ,  Michio Naito ,  Byungdu Oh

IPC分类号： C23C14/08 ,  C30B23/02 ,  H01L39/24

CPC分类号： H01L39/2435 ,  C23C14/087 ,  C30B23/002 ,  C30B23/02 ,  C30B29/22 ,  C30B29/225 ,  Y10S505/73 ,  Y10S505/731 ,  Y10S505/742

摘要： A method of forming a superconducting YBa.sub.2 Cu.sub.3 O.sub.7-x thin film with selected crystal orientation is described which comprises the steps of sputtering simultaneously Y, Ba and Cu onto the surface of a substrate, introducing oxygen at said surface during deposition, controlling the stoichiometry of the elements Y, Ba or both richer or poorer than the 1:2:3 stoichiometry within a few atom percent and followed by annealing to selectively grow an a-axis or a c-axis oriented film of YBa.sub.2 Cu.sub.3 O.sub.7-x.

摘要翻译： 描述了形成具有选定晶体取向的超导YBa2Cu3O7-x薄膜的方法，其包括以下步骤：将Y，Ba和Cu同时溅射到衬底的表面上，在沉积期间在所述表面引入氧，控制元素的化学计量 Y，Ba或比在1原子百分比内的1:2:3化学计量比较富或较差，然后进行退火以选择性地生长YBa2Cu3O7-x的a轴或c轴取向薄膜。

公开(公告)号：US5900730A

公开(公告)日：1999-05-04

申请号：US846098

申请日：1997-04-25

申请人： Hong Teuk Kim ,  Byungdu Oh ,  Young-Hwan Choi ,  Seung-Hyun Moon

发明人： Hong Teuk Kim ,  Byungdu Oh ,  Young-Hwan Choi ,  Seung-Hyun Moon

IPC分类号： G01R33/035

CPC分类号： G01R33/0356 ,  Y10S505/846

摘要： A magnetometer using a plurality of superconducting quantum interference devices (SQUIDs) includes a detecting part composed of a plurality of SQUIDs each detecting external magnetic flux, converting the detected external flux into a voltage value, and outputting a differential voltage of the converted voltage value, a signal-processing part for modulating, amplifying, and demodulating the differential voltage outputted by the detecting part, and a feedbacking part for converting a signal outputted by the signal-processing part into magnetic flux to feedback the signal to the loop of the SQUIDs.

摘要翻译： 使用多个超导量子干涉装置（SQUID）的磁力计包括检测部，其由检测外部磁通的多个SQUID构成，将检测出的外部磁通转换为电压值，并输出转换后的电压值的差分电压， 用于调制，放大和解调由检测部分输出的差分电压的信号处理部分，以及用于将由信号处理部分输出的信号转换为磁通量的反馈部分，以将信号反馈到SQUID的环路。

公开(公告)号：US5732343A

公开(公告)日：1998-03-24

申请号：US676675

申请日：1996-07-10

申请人： Hong Teuk Kim ,  Byungdu Oh

发明人： Hong Teuk Kim ,  Byungdu Oh

IPC分类号： H03K3/00 ,  H03D9/06 ,  H04B1/26

CPC分类号： H03D9/0608 ,  H04B1/26

摘要： Microwave harmonic mixer circuit of SQUID(Superconducting Quantum Interference Device) is disclosed, in which a magnetic flux to voltage conversion characteristics of SQUID is used for generating a higher harmonics from an LO(Local Oscillator) signal, and mixing the higher LO harmonics with a radio frequency(RF) signal, including an SQUID for adding a RF(Radio Frequency) signal to a magnetic flux of an LO(Local Oscillator) signal frequency for having a mixing of the frequencies done; a current applying part and a grounding part disposed on both sides of the SQUID and connected to a current source on one side and grounded on the other side respectively for supplying operation current to the SQUID; RF antenna parts one each disposed between the SQUID and the current applying part and the SQUID and the grounding part for feeding a RF signal into the SQUID; an LO signal source and antenna part for applying a flux of an LO signal frequency to the SQUID; and, an IF signal detecting part for detecting an IF(Intermediate Frequency) signal mixed in the SQUID, whereby a flux to voltage conversion characteristics of the SQUID of a superconducting junction is used in modulating the frequency and magnetic flux intensity of the LO signal for generating a dominant LO higher harmonics of very high order and mixing the higher harmonics with a high frequency RF signal in frequency base.

摘要翻译： 公开了SQUID（超导量子干涉装置）的微波谐波混频电路，其中使用SQUID的磁通与电压转换特性从LO（本地振荡器）信号产生高次谐波，并将较高的LO谐波与 射频（RF）信号，包括用于将RF（射频）信号添加到LO（本地振荡器）信号频率的磁通量的SQUID，用于使所完成的频率混合; 电流施加部分和接地部分，其设置在SQUID的两侧，并分别连接到一侧的电流源，另一侧接地，以向SQUID提供工作电流; 每个放置在SQUID和电流施加部分之间的RF天线部分和SQUID和用于将RF信号馈送到SQUID中的接地部分; 用于向SQUID施加LO信号频率的磁通的LO信号源和天线部分; 以及用于检测混合在SQUID中的IF（中频）信号的IF信号检测部分，由此使用超导结的SQUID的磁通与电压转换特性来调制LO信号的频率和磁通强度，以便 产生超高次谐波的主要LO高次谐波，并将高次谐波与频率基站中的高频RF信号进行混频。