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Extra-Large Magnetoresistance in Fe/In2O3 Granular Films

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Chinese Physics Letters 2002年第7期19卷 1004-1006页

作者： huang Bao-Xin liu yi-hua Wang Jun-hua Zhang Lin Zhang Ru-Zhen Zhang Lian-Sheng Mei Liang-Mo Department of Physics and State Key Laboratory of Crystal Materials Shandong University Ji'nan 250100

Nanogranular Fe0.35/(In2O3)0.65 films with complex magnetic structure were prepared by the rf sputtering method. An extra-large magnetoresistance up to 506% was obtained at 2.2K, which is two orders of magnitude larger than that obtained at room temperature. This is related to the interaction with the impurities influencing the local magnetization, which is quite different from the spin-dependent tunnelling effect at room temperature. The interspacing Fe atoms dispersed in the In2O3 matrix play an important role in the transportation properties of carriers at low temperature.

关键词： Indium compounds

Giant Magneto-Impedance Effect in As-Deposited Multilayered Amorphous Films

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Chinese Physics Letters 1999年第6期16卷 452-454页

作者： XIAO Shu-qin liu De-zhen liu yi-hua DAI You-yong ZHANG Lin MEI Liang-mo Department of Physics Shandong UniversityJi'nan 250100 College of Materials Science and Engineering Shandong University of TechnologyJi'nan 250014

Giant magneto-impedance effects have been observed in as-deposited amorphous FeCuNbSiB/Cu/FeCuNbSiB and FeCuNbSiB/SiO_(2)/Ag/SiO_(2)/FeCuNbSiB multilayered *** films were deposited onto Si substrates by radio frequency *** FeCuNbSiB/Cu/FeCuNbSiB films,maximum giant magneto-impedance ratios as large as 32%and 11%were obtained at 13 MHz in the longitudinal and transverse fields,*** FeCuNbSiB/SiO_(2)/Ag/SiO_(2)/FeCuNbSiB films,the maximum giant magneto-impedance ratios were 47%and 57%at the same frequency for the two cases,which are much larger than those obtained in the annealed single layer Hlms.

关键词： impedance amorphous transverse

Frequency and Field Dependences of Giant Magneto-Impedance Effect in Sandwiched FeCuCrVSiB Films

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Chinese Physics Letters 2001年第2期18卷 272-274页

作者： DAI You-Yong XIAO Shu-Qin liu yi-hua ZHANG Lin WU Hou-Zheng ZHANG Yan-Zhong Department of Physics Shandong UniversityJi’nan 250100 Shanghai Iron and Steel Research Institute Shanghai 200940

The giant magneto-impedance(GMI)effect has been investigated in sandwiched FeCuCrVSiB films annealed at 300℃ for 1.5 *** frequency and field dependences of the GMI have been observed in the frequency range from 50 kHz to 13 *** GMI ratio increases at first with increasing frequency,and reaches its maximum value of 136%at a very low characteristic frequency of about 4 MHz,and then decreases with further increasing *** superior properties are related to the special structure of the sandwiched films.

关键词： sandwich impedance annealed

Giant Magneto-impedance Effect in Nanocrystalline Fe_(73.5)CuNb_(3)Si_(13.5)B_(9) Ribbons

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Chinese Physics Letters 1996年第12期13卷 927-930页

作者： CHEN Chen GUO Hui-qun ZHAO Tong-yun LI Min LUAN Kai-zheng SHEN Bao-gen liu yi-hua ZHAO Jian-gao MELiang-mo State Key Laboratory of Magnetism Institute of Physics&Center of Condensed Matter PhysicsChinese Academy of SciencesBeijing 100080 Department of Physics Shandong UniversityJi’nan 250100

Magneto-impedance(MI)effects have been observed in amorphous and nanocrystalline Fe_(73.5)CuNb_(3)Si_(13.5)B_(9) *** MI values have been obtained in nanocrystalline samples(NCS),but not in as-quenched samples(AQS).The magnetic responses of impedance of nanocrystalline samples share some common features with that of Co-based amorphous wire and ribbon *** field dependencies of effective permeability for nanocrystalline samples have shown a sharp change at the anisotropy *** effective permeability and the hysteresis loops for AQS and NCS have been shown to be responsible for their MI *** sensitivity of the magnetic responses in the nanocrystalline sample can reach 50%/Oe.

关键词： impedance amorphous hysteresis

Magneto-Impedance in Amorphous FeCuNbSiB Films

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Chinese Physics Letters 1998年第10期15卷 748-749页

作者： XIAO Shu-qin liu yi-hua ZHANG Lin HU Ji-fan LOU Jian-xin huaNG Bao-xin DAI You-yong Department of Physics Shandong UniversityJinan 250100

Longitudinal and transverse magneto-impedance effects have been observed in amorphous FeCuNbSiB films made by radio frequency *** magneto-impedance values have been obtained at lower *** field dependence and frequency... 详细信息

关键词： impedance amorphous transverse

Spin-Polarized Electron Injection in Co/Cu/Fe Sandwich Structure

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Chinese Physics Letters 2000年第8期17卷 603-605页

作者： WANG Shou-guo CHEN Yan-Xue WANG Zhi-he CHEN Qiang CHEN Jmg-Lin SHEN Hong-Lie liu yi-hua XIE Shi-jie MEI Liang-mo Department of Physics Shandong UniversityJi Jnan 250100 Shanghai Metallurgy Institute Chinese Academy of SciencesShanghai 200050 Institute of Plasma Physics Chinese Academy of SciencesHefei 230031

A material asymmetry Co/Cu/Fe junction structure has been prepared for studying the spin-polarized electron injection at *** sample performance was demonstrated to be analogous to that of a bipolar *** maximal value of the output pulse voltage between Cu and Fe layers could reach the order of severalμV when the bias current between Co and Cu layers was 10μ*** interface roughness,photograph of material,magnetic loop and injection characteristic curves have been *** important points on this topic have been discussed.

关键词： Co/Cu Electron roughness

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分段式电容传感器及其应用

传感技术学报 2006年第1期19卷 196-198页

作者：刘华毅范世宇大连理工大学电信学院辽宁大连116023

在油田原油生产过程中,油水界面的检测一直以来都是一个关键技术和难题,在传统电容传感器原理的基础上设计了一种新型的分段式电容传感器,很好地解决了这一难题。由于该传感器精度高,原理和结构比较简单,并且价格便宜,具有很好的应用前景。

关键词：油水界面电容传感器电容检测

Piggyback liver transplant techniques in the surgical management of urological tumors with inferior vena cava tumor thrombus

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Chinese Medical Journal 2009年第18期122卷 2155-2158页

作者： JI Zhi-gang XUE Chong LI Han-zhong WANG Hui-jun XIE yi liu Guan-hua Department of Urology Peking Union Medical College Hospital Chinese Academy of Medical Sciences Beijing 100730 China

Background An important characteristic of renal cell carcinomas and adrenal tumors is that these tumors may expand into the renal vein and inferior vena cava, and transform into tumor thrombi. This study was to evaluate the use of piggyback liver transplant techniques for surgical management of urological tumors with inferior vena cava tumor thrombus. Methods Nineteen patients with renal cell carcinomas or adrenal tumors with inferior vena cava tumor thrombus were treated from November 1995 to April 2008. Their ages ranged from 29 years to 76 years （mean 54 years）. The extent of tumor thrombus was infrahepatic （level Ⅰ） in 2, retrohepatic （level Ⅱ） in 7, suprahepatic （level Ⅲ） in 6, and intra-atrial （level Ⅳ） in 4 patients. We used cardiopulmonary bypass with deep hypothermic circulatory arrest to remove the thrombi in 3 cases of level IV and in 2 cases of level Ⅲ. In all level Ⅱ, 4 level Ⅲ, and 2 level IV cases, we used piggyback liver transplant techniques to mobilize the liver off of the inferior vena cava and to separate the inferior vena cava from the posterior abdominal wall. Results Mean operative time was 5.1 hours, mean estimated blood loss was 2289 ml and mean blood transfusion was 12.84 U. One patient with adrenal cortical carcinoma and level Ⅳ thrombus died in the immediate postoperative period. Three patients were lost to follow up, and the other 15 survivors were followed from 5 months to 56 months. Eight of these 15 patients died due to metastasis; however 7 were still alive at the last follow-up. Conclusions An aggressive surgical approach is the only hope for curing patients diagnosed with urological tumors combined with inferior vena cava tumor thrombus. The use of piggyback liver transplant techniques to mobilize the liver off of the inferior vena cava provides excellent exposure of the inferior vena cava. Patients with a level Ⅱ or level Ⅲ inferior vena cava thrombus may be treated without using cardiopulmonary bypass.

关键词： renal cell carcinoma tumor thrombus inferior vena cava liver transplantation

MAGNETIC PROPERTIES OF MULTILAYERED FeSi/Cu FILMS

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MAGNETIC PROPERTIES OF MULTILAYERED FeSi/Cu FILMS