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INTERMAG 2006 - IEEE International Magnetics Conference最新文献

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Lateral Size Dependence of Pac-man shaped Ni80Fe20 Element on Magnetization Reversal 吃豆形Ni80Fe20元件横向尺寸对磁化反转的依赖性
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.375910
J. Jabal, Y. Hong, B. Choi, H. Han, S. Gee, G. Abo, J. Hass, G. Donohoe
{"title":"Lateral Size Dependence of Pac-man shaped Ni80Fe20 Element on Magnetization Reversal","authors":"J. Jabal, Y. Hong, B. Choi, H. Han, S. Gee, G. Abo, J. Hass, G. Donohoe","doi":"10.1109/INTMAG.2006.375910","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.375910","url":null,"abstract":"The magnetization configuration and switching mechanism of small patterned submicron and micron scaled magnetic elements of Ni80Fe20 thin film having the elongated Pac-man (EPM) shape is performed using micromagnetic simulation. The reduction of lateral size of elongated Pac-man elements decreases the possibility of domain wall formation, which results in increasing the switching speed. However, the magnetization ringing is enhanced for smaller elements due to the high energy supplied to the element to achieve the reversal. The ringing is found to be suppressed from the reduction in the thickness of the thin film to 3.2 nm as seen from other micromagnetic studies performed on elliptical Ni80Fe20 elements.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129626624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crystallographic orientation analysis of magnetite thin films by means of electron backscatter diffraction (EBSD) 用电子背散射衍射(EBSD)分析磁铁矿薄膜的晶体取向
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.375455
A. Koblischka-Veneva, M. Koblischka, F. Muecklich, S. Murphy, Y. Zhou, I. Shvets
{"title":"Crystallographic orientation analysis of magnetite thin films by means of electron backscatter diffraction (EBSD)","authors":"A. Koblischka-Veneva, M. Koblischka, F. Muecklich, S. Murphy, Y. Zhou, I. Shvets","doi":"10.1109/INTMAG.2006.375455","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.375455","url":null,"abstract":"Fe3O4[001] thin films is grown on MgO[001] substrates using oxygen-plasma-assisted molecular beam epitaxy and annealed in air at 250 degC. Automated EBSD scans is performed twice to study the crystallographic orientation by means of recording of Kikuchi patterns.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128217200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Periodic Table of Impurity Damping in Doped Permalloy Thin Films 掺杂坡莫合金薄膜中杂质阻尼的周期表
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.376149
J. Rantschler, D. Pulugurtha, A. Shapiro, L. Connors, A. Chen, A. Castillo, B. Maranville, R. McMichael, W. Egelhoff
{"title":"Periodic Table of Impurity Damping in Doped Permalloy Thin Films","authors":"J. Rantschler, D. Pulugurtha, A. Shapiro, L. Connors, A. Chen, A. Castillo, B. Maranville, R. McMichael, W. Egelhoff","doi":"10.1109/INTMAG.2006.376149","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.376149","url":null,"abstract":"This paper presents a survey of the effects of transition metal doping on the damping properties of thin films of Permalloy (Ni80Fe20). For many applications requiring high speed or high data rates, the magnetization of Permalloy is underdamped, and this results in magnetization precession with a lifetime of a few nanoseconds. In these materials, faster switching could be accomplished by increased damping. The coupling to the thermal bath that allows magnetic energy to dissipate is also responsible for driving thermal fluctuations of the magnetization. These fluctuations are observable in small sensors as magnetization noise. For these applications, the noise limit of the sensor could be improved with reduced damping.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128323932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
In-field Mɬssbauer spectra for LaxSr1-xFeO3-y (x=1/3, 1/2) above their charge disproportionation temperature 在电荷歧化温度以上，LaxSr1-xFeO3-y (x=1/ 3,1 /2)的场内MÉ - ssbauer光谱
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.374862
S. Yoon, C. Kim
{"title":"In-field Mɬssbauer spectra for LaxSr1-xFeO3-y (x=1/3, 1/2) above their charge disproportionation temperature","authors":"S. Yoon, C. Kim","doi":"10.1109/INTMAG.2006.374862","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.374862","url":null,"abstract":"The charge disproportionation (CD) was first observed by Mossbauer spectroscopy in the sample La1/3Sr2/3FeO3, in which the Fe ions could take non-integral charge states between Fe3+ and Fe5+ depending on the composition. The results of external field Mossbauer spectroscopy for LaxSr1-xFeO3-y (x=1/3,1/2) concerning how the external magnetic field affects the CD state above their transition temperature were discussed. Chemical analysis showed that oxygen non-stoichiometry y were 0.04 and 0.025 for x=1/3 and 1/2, respectively. External magnetic field up to 6 T was applied both parallel and perpendicular to the direction of gamma-ray propagation using a split magnet superconductor cryostat. As the external magnetic field is parallel to the gamma-ray direction, the spectral lines 2 and 5 are suppressed (the lines 3 and 4 are overwhelmed by the strong central singlet). The magnetic moments are aligned perpendicular to the gamma-ray direction.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128451354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Low RA tunnel-junctions with MgO-Barrier 低RA隧道结与镁-屏障
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.374890
J. Longer, B. Ocker, W. Maass
{"title":"Low RA tunnel-junctions with MgO-Barrier","authors":"J. Longer, B. Ocker, W. Maass","doi":"10.1109/INTMAG.2006.374890","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.374890","url":null,"abstract":"The utilization of MgO as tunnel barrier gave a new boost in the investigation of tunnel-junctions for storage and sensing applications. This paper discusses the deposition technique and the magnetic, electrical, and structural properties of MgO.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128378942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Turbo Equalization as a Postprocessor for Partial-Response Channels Turbo均衡作为部分响应通道的后处理器
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.375885
B. Kurkoski, K. Yamaguchi
{"title":"Turbo Equalization as a Postprocessor for Partial-Response Channels","authors":"B. Kurkoski, K. Yamaguchi","doi":"10.1109/INTMAG.2006.375885","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.375885","url":null,"abstract":"Post-Viterbi processors are used for detection of partial-response channels coded with weak parity codes, whereas turbo equalization is usually used for detection and decoding of strong low-density parity check (LDPC) codes. This digest discusses the use of turbo equalization for joint detection and decoding of parity codes that would be used in postprocessing systems. The proposed system has complexity significantly lower than conventional LDPC-turbo equalization systems, and has excellent performance vis-a-vis postprocessing systems. The flexibility of the proposed system is demonstrated by considering an unequal error protection (UEP) code which preferentially places Viterbi algorithm error events within Reed-Solomon symbol boundaries to decrease the sector error rate.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128702224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Exchange anisotropy of ferromagnetic/antiferromagnetic bilayers with L12-Mn3(IR, Ru, Rh) 与L12-Mn3(IR, Ru, Rh)交换铁磁/反铁磁双层膜的各向异性
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.376299
M. Tsunoda, M. Naka, K. Imakita, M. Takahashi
{"title":"Exchange anisotropy of ferromagnetic/antiferromagnetic bilayers with L12-Mn3(IR, Ru, Rh)","authors":"M. Tsunoda, M. Naka, K. Imakita, M. Takahashi","doi":"10.1109/INTMAG.2006.376299","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.376299","url":null,"abstract":"In this study, the formation of L1<sub>2</sub>-Mn<sub>3</sub>Rh and L1<sub>2</sub>-Mn<sub>3</sub>Ru phases were examined, in accordance with the recipe of L1<sub>2</sub>-phase formation for Mn-Ir. The exchange biasing properties of the bilayers with these L1<sub>2</sub> phases were investigated.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128971395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Optimum Sheet Resisitance for Integrated Electromagnetic Noise Suppressor 集成电磁噪声抑制器的最佳片阻分析
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.375561
M. Yamaguchi, K. Maruta, M. Sugawara, Y. Shimada
{"title":"Analysis of Optimum Sheet Resisitance for Integrated Electromagnetic Noise Suppressor","authors":"M. Yamaguchi, K. Maruta, M. Sugawara, Y. Shimada","doi":"10.1109/INTMAG.2006.375561","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.375561","url":null,"abstract":"The article discusses the physical nature of the optimum sheet resistance for the integrated electromagnetic noise suppressor. The system is a microstrip-line with Co-Al-O granular soft magnetic film on top of the signal line. Experimental result shows that there is an optimum sheet resistance which maximize the loss generation at the magnetic materials portion. Loss generation can be maximized by combining maximum eddy current losses and FMR losses.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129008299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Anomalous temperature variation of interlayer exchange coupling in CoFe/Bi/Co trilayers CoFe/Bi/Co三层间交换耦合的反常温度变化
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.374850
J. Hsu, Z. Xue
{"title":"Anomalous temperature variation of interlayer exchange coupling in CoFe/Bi/Co trilayers","authors":"J. Hsu, Z. Xue","doi":"10.1109/INTMAG.2006.374850","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.374850","url":null,"abstract":"In this study different temperature dependences have been observed for ferromagnetic (FM) and anti-ferromagnetic (AFM) couplings. A theoretical modeling will be proposed in the presentation to account for this unusual thermal effect. CoFe/Bi/Co sandwich samples were synthesized using dc sputtering at room temperature. The crystal structure and the cross-sectional microstructures of the films were investigated by X-ray diffraction (XRD) using Cu-Kalpha radiation and 300 KeV high-resolution transmission electron microscopy (HRTEM). The magnetic properties were determined from a vibrating sample magnetometer (VSM).The representative magnetization loops of trilayer samples with various spacer thicknesses measured at 150K, 200K and 300 K respectively were determined.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129451525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetization Reversal in CGC Perpendicular Recording Media CGC垂直记录介质的磁化反转
INTERMAG 2006 - IEEE International Magnetics Conference Pub Date : 2006-05-08 DOI: 10.1109/INTMAG.2006.376204
K. Tham, Y. Sonobe, T. Onoue, L. Wu, T. Umezawa, C. Takasu, J.H. Dumaya, P. Leo, M. Liau
{"title":"Magnetization Reversal in CGC Perpendicular Recording Media","authors":"K. Tham, Y. Sonobe, T. Onoue, L. Wu, T. Umezawa, C. Takasu, J.H. Dumaya, P. Leo, M. Liau","doi":"10.1109/INTMAG.2006.376204","DOIUrl":"https://doi.org/10.1109/INTMAG.2006.376204","url":null,"abstract":"In order to shed light on the magnetization reversal mechanism of CGC perpendicular recording media, the authors have carried out investigations of its activation volume, the angular dependence of Hc, cluster size and the physical grain size.","PeriodicalId":262607,"journal":{"name":"INTERMAG 2006 - IEEE International Magnetics Conference","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130523606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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