公开(公告)号：US20070063692A1

公开(公告)日：2007-03-22

申请号：US11438304

申请日：2006-05-23

申请人： Kudumboor Rao ,  Valter Strom ,  Ziyan Gu ,  Seetharama Deevi

发明人： Kudumboor Rao ,  Valter Strom ,  Ziyan Gu ,  Seetharama Deevi

IPC分类号： G01R33/16 ,  G01N27/76

CPC分类号： G06K1/125 ,  C22C38/06 ,  G01R33/16 ,  G06K19/022 ,  G06K19/06196 ,  H01F1/047 ,  Y10T428/32

摘要： A local magnetic susceptibility unit is adapted to measure the AC magnetic susceptibility of a surface region of a sample. The unit comprises a sensing element and one or more balancing elements arranged in a circuit. When a sample is placed proximate to the sensing element the sample induces an imbalance voltage in the circuit.

摘要翻译： 本地磁化率单元适于测量样品表面区域的交流磁化率。 该单元包括感测元件和布置在电路中的一个或多个平衡元件。 当样品靠近感应元件放置时，样品会在电路中产生不平衡电压。

公开(公告)号：US20070072006A1

公开(公告)日：2007-03-29

申请号：US11438226

申请日：2006-05-23

申请人： Seetharama Deevi ,  Kudumboor Rao ,  Valter Strom ,  Ziyan Gu

发明人： Seetharama Deevi ,  Kudumboor Rao ,  Valter Strom ,  Ziyan Gu

IPC分类号： C22C38/06 ,  H01F1/00 ,  B32B15/00

CPC分类号： G06K1/125 ,  C22C38/06 ,  G01R33/16 ,  G06K19/022 ,  G06K19/06196 ,  H01F1/047 ,  Y10T428/32

摘要： An intermetallic or iron aluminide magnetically readable medium and a method of forming and reading the same are provided herein. Also provided is an identification card or tag, a key, an anti-counterfeiting measure, an anti-forging measure. The intermetallic or iron aluminide magnetically readable medium includes a magnetically readable surface, wherein the magnetically readable surface contains one or more first magnetically readable regions of the intermetallic or iron aluminide surrounded by one or more second magnetically readable regions. Additionally, the intermetallic or iron aluminide magnetically readable medium can be coated, encapsulated or concealed within a material.

摘要翻译： 本文提供金属间化合物或铁铝磁性磁性可读介质及其形成和读取方法。 还提供了身份证或标签，钥匙，防伪措施，防锻措施。 金属间化合物或铁铝磁性可读介质包括磁性可读表面，其中所述磁可读表面包含由一个或多个第二可磁性可读区域包围的金属间化合物或铁铝化物的一个或多个第一磁性可读区域。 此外，金属间化合物或铁铝磁性可读介质可以被涂覆，封装或隐藏在材料内。

公开(公告)号：US20060148105A1

公开(公告)日：2006-07-06

申请号：US10544655

申请日：2004-02-06

申请人： Parmanand Sharma ,  Kudumboor Rao ,  Borje Johansson ,  Rajeev Ahuja

发明人： Parmanand Sharma ,  Kudumboor Rao ,  Borje Johansson ,  Rajeev Ahuja

IPC分类号： H01L21/00

CPC分类号： H01F41/205 ,  B82Y25/00 ,  C04B35/453 ,  C04B2235/3267 ,  C04B2235/3284 ,  C04B2235/9653 ,  H01F1/0009 ,  H01F1/0045 ,  H01F1/401 ,  H01F1/402 ,  H01F10/193 ,  H01F41/0246 ,  H01F41/18 ,  H01L41/187 ,  H01L43/10

摘要： A method is provided for producing a doped dilute ferromagnetic semiconductor material, by doping Zinc Oxide in bulk form with manganese to a maximum level of 5 atomic percent concentration. The material is preferably sintered at a maximum temperature of 650° C. The result of this process is a semiconductor material comprising Mn-doped ZnO with a Mn concentration not exceeding 5 atomic percent, wherein the Mn-doped ZnO is ferromagnetic within at least a part of the temperature range from about 218 Kelvin to about 425 Kelvin.