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IEEE Translation Journal on Magnetics in Japan最新文献

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Giant Magnetoresistance of Spin Valve Films with NiO Antiferromagnetic Films NiO反铁磁薄膜自旋阀薄膜的巨磁电阻
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565986
H. Hoshiya;M. Komuro;K. Mitsuoka;Y. Sugita
{"title":"Giant Magnetoresistance of Spin Valve Films with NiO Antiferromagnetic Films","authors":"H. Hoshiya;M. Komuro;K. Mitsuoka;Y. Sugita","doi":"10.1109/TJMJ.1994.4565986","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565986","url":null,"abstract":"The magnetic and magnetoresistive properties of films having spin valve structures were investigated. The basic structure of such films consists of two ferromagnetic layers separated by a Cu layer. One of the ferromagnetic layers is strongly biased by an NiO antiferromagnetic film in direct exchange contact with it. Spin valve films having an NiO/NiFe/Cu/NiFe structure exhibit good sensitivity, and the MR ratio (Δρ/ρ) is 4% in an applied field of 10 Oe. Films with a layered NiO/NiFe/Cu/NiFe/Cu/NiFe/NiO structure have an MR ratio of 7% in a field of 10 Oe. On the other hand, NiO/NiFe/Co/Cu/Co/NiFe films exhibit an MR ratio of 6% to 7.5%. The thermal stability of spin valve films was also studied.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"236-241"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565986","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67873629","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: 11
[Masthead] [刊头]
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565946
{"title":"[Masthead]","authors":"","doi":"10.1109/TJMJ.1994.4565946","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565946","url":null,"abstract":"Provides a listing of current staff, committee members and society officers.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"nil1-nil1"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565946","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67872881","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
Magnetic Properties of Ring-Shaped Composite Anisotropy Multilayers 环形复合材料各向异性多层膜的磁性能
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565992
E. Sugawara;Y. Inokoshi;F. Matsumoto;Y. Shimada;H. Fujimori;T. Masumoto
{"title":"Magnetic Properties of Ring-Shaped Composite Anisotropy Multilayers","authors":"E. Sugawara;Y. Inokoshi;F. Matsumoto;Y. Shimada;H. Fujimori;T. Masumoto","doi":"10.1109/TJMJ.1994.4565992","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565992","url":null,"abstract":"We have investigated eight-layered and twelve-layered composite anisotropic films to obtain advanced properties for practical use, and to understand the relation between the magnetic layers. Calculations of the permeability based on the Landau-Lifshitz relation predict that the dipole-dipole coupling between the magnetic layers works in favor of the K\u0000<inf>u</inf>\u0000 (in-plane uniaxial anisotropy) in each magnetic layer. When the gap between the magnetic layers is varied using ceramic layers, the dipole moment of the metal layers is influenced by the magnetic interaction of a ripple stray field in a 45° direction across intervening ceramic layers. In order to clarify the mechanism governing the isotropic permeabilities of these multilayer films, we extended our study to include ring-shaped as well as disk-shaped samples. In comparison with a uniaxial multilayer film, a ring-shaped composite anisotropy multilayer film has a closed magnetic circuit and hence a large inductance. Composite anisotropy effects are discussed.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"272-280"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565992","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67872882","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
Fundamental Characteristics of a Large-Scale Cylindrical Magnetic Shield with Shaking 大型振动圆柱形磁屏蔽的基本特性
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565954
I. Sasada;Y. Ohnaka
{"title":"Fundamental Characteristics of a Large-Scale Cylindrical Magnetic Shield with Shaking","authors":"I. Sasada;Y. Ohnaka","doi":"10.1109/TJMJ.1994.4565954","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565954","url":null,"abstract":"A large-scale cylindrical magnetic shielding case was developed. It was made of permalloy (outer diameter 68 cm, length 180 cm, thickness 1.6 mm, weight approximately 60 kg) with an opening at one end and with Metglas® 2705M amorphous ribbons (width 5 cm, thickness approximately 22 μm) wound spirally about the permalloy case in 16 layers (total weight 12.1 kg) to cover the surface. A toroidal coil (36 turns) was wound around the amorphous layers to allow the creation of a magnetic shaking field. An external magnetic field was applied to the shielding case by means of a large rectangular Hemholtz coil, to evaluate the shielding factor, which was about 2700 at a frequency of 0.5 Hz when the shaking frequency was 200 Hz. At higher frequencies, it gradually dropped. The shielding factor was almost constant relative to the amplitude of the disturbing field down to 3 mG; beyond that point, a residual field could not be detected because of the limit of resolution of the flux gate magnetometer used. The leakage of the shaking field was about 30 μG at the center of the shielding case.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"33-38"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565954","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67873534","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
Magnetostriction of Fe-Co Alloy Films and Its Control by Multilayering Fe-Co合金薄膜的磁致伸缩及其多层控制
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565957
T. Shima;N. Kataoka;H. Fujimori
{"title":"Magnetostriction of Fe-Co Alloy Films and Its Control by Multilayering","authors":"T. Shima;N. Kataoka;H. Fujimori","doi":"10.1109/TJMJ.1994.4565957","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565957","url":null,"abstract":"The bec Fe\u0000<inf>70</inf>\u0000Co\u0000<inf>30</inf>\u0000 alloy has a high saturation magnetization and a large positive magnetostriction, whereas the fcc Ni\u0000<inf>75</inf>\u0000Co\u0000<inf>25</inf>\u0000 alloy has a large negative magnetostriction value. This paper reports the results of a systematic investigation into the magnetic properties of FeCo/NiCo multilayer films. Magnetostriction in an FeCo/NiCo film becomes smaller as the ratio of the thickness of the NiCo layer to that of the FeCo/NiCo film increases. The film (3/7 nm) has a saturation magnetization of 120 emu/g and a coercivity of 1.7 Oe, with nearly zero magnetostriction.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"55-60"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565957","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67873538","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
Application to an EMI Noise Filter of a High-Loss CoZrNb/SiO2 Multilayer Film 高损耗CoZrNb/SiO2多层膜在EMI噪声滤波器中的应用
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565961
M. Senda;O. Ishii;T. Mori
{"title":"Application to an EMI Noise Filter of a High-Loss CoZrNb/SiO2 Multilayer Film","authors":"M. Senda;O. Ishii;T. Mori","doi":"10.1109/TJMJ.1994.4565961","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565961","url":null,"abstract":"This paper reports the application of a magnetic alloy/nonmagnetic insulator multilayer film in EMI noise filters. The eddy-current skin effect in the magnetic alloy layers was used to achieve high-loss properties. The thickness of each layer and magnetic anisotropy of a CoZrNb/SiO\u0000<inf>2</inf>\u0000 multilayer film were designed such that the film would exhibit high-loss properties in the 30 to 1000 MHz frequency range. A noise filter tube was constructed incorporating such high-loss film, and a large impedance and noise attenuation for common-mode noise in this frequency range were confirmed. A noise filter tube was constructed with size reduced by a factor of ~100 compared with a conventional filter (ferrite core).","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"78-83"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565961","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67873541","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: 3
In-Situ Observations of Magneto-Optical Spectra for Co/Cu (001) Ultrathin Films Co/Cu（001）超薄膜磁光谱的原位观测
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565976
K. Nakajima;T. Miyazaki
{"title":"In-Situ Observations of Magneto-Optical Spectra for Co/Cu (001) Ultrathin Films","authors":"K. Nakajima;T. Miyazaki","doi":"10.1109/TJMJ.1994.4565976","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565976","url":null,"abstract":"The magneto-optical properties of ultrathin fcc Co films epitaxially grown on Cu (001) surfaces were investigated. The growth conditions were optimized, and the RHEED patterns of Co ultrathin films revealed streaks reflecting the symmetry of the fcc Cu (001) surface. Longitudinal Kerr hysteresis loops were square for Co coverage thicknesses greater than 6Å, and were detected down to 4Å. The longitudinal Kerr rotation and ellipticity spectra were measured over the photon energy range from 2.0 to 4.6 eV, after Co coverage deposition of each sample. The off-diagonal elements of the conductivity tensor (ωσ\u0000<sub>xy</sub>\u0000) were evaluated. When the Co coverage thickness is 50Å, the shapes of both the ωσ'\u0000<sub>xy</sub>\u0000 and ωσ\"\u0000<inf>xy</inf>\u0000 spectra showed essentially the same features as those of 1000Å thick fcc Co films. When the Co thickness decreased below 50Å, ωσ\"\u0000<sub>xy</sub>\u0000 became smaller in magnitude. The decrease in ωσ\"\u0000<sub>xy</sub>\u0000 as a fraction of a number of Co/Cu layers is discussed.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"171-176"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565976","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67872982","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
A Technique for Measuring Thin-Film Inductors Driven at High Flux Densities 一种高通量驱动薄膜电感的测量技术
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565959
M. Yamaguchi;H. Okuyama;K.I. Arai
{"title":"A Technique for Measuring Thin-Film Inductors Driven at High Flux Densities","authors":"M. Yamaguchi;H. Okuyama;K.I. Arai","doi":"10.1109/TJMJ.1994.4565959","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565959","url":null,"abstract":"This paper discusses the basic properties of thin-film inductors driven at high flux densities. We made inner-coil-type thin-film inductors, each with either a closed or an open magnetic circuit, and developed a technique for measuring the impedance of the inductors at high flux densities. We used this technique to reduce the multiple voltage reflections between amplifier and inductor. The impedance of the magnetic thin-film inductors varied according to the magnetic field intensity, because of flux saturation.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"66-71"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565959","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67873539","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
Composition Dependence of the Magnetoresistance for Ni-Co/Cu and Co-Fe/Cu Multilayer Films Ni-Co/Cu和Co-Fe/Cu多层膜磁阻的组分依赖性
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565995
H. Kubota, T. Miyazaki
{"title":"Composition Dependence of the Magnetoresistance for Ni-Co/Cu and Co-Fe/Cu Multilayer Films","authors":"H. Kubota, T. Miyazaki","doi":"10.1109/TJMJ.1994.4565995","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565995","url":null,"abstract":"The composition dependence of the giant magnetoresistance due to the interlayer exchange coupling of Ni-Co/Cu and Co-Fe/Cu multilayer films was studied. Samples were prepared by magnetron sputtering on a glass substrate. They had an fcc (111) preferred orientation parallel to the growth direction. Both the MR ratio and the saturation field were observed to oscillate as functions of the Cu thickness in both systems studied. The peak values of the MR ratio and saturation field as functions of the magnetic layer composition exhibited maxima near the electron number of Co, in qualitative agreement with theoretical calculations based on the Anderson model.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"2 1","pages":"291-297"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90577787","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: 6
Magnetic Properties of Sm-Nd-Fe-Co-N Compounds and Their Bonded Magnets Sm-Nd-Fe-Co-N化合物及其粘结磁体的磁性
IEEE Translation Journal on Magnetics in Japan Pub Date : 1994-11-01 DOI: 10.1109/TJMJ.1994.4565984
H. Yamamoto;T. Kumanbara;T. Kojima;K. Tomii
{"title":"Magnetic Properties of Sm-Nd-Fe-Co-N Compounds and Their Bonded Magnets","authors":"H. Yamamoto;T. Kumanbara;T. Kojima;K. Tomii","doi":"10.1109/TJMJ.1994.4565984","DOIUrl":"https://doi.org/10.1109/TJMJ.1994.4565984","url":null,"abstract":"Experiments were carried out to investigate the magnetic and physical properties of (Sm\u0000<sub>1-x</sub>\u0000Nd\u0000<sub>x</sub>\u0000)\u0000<sub>2</sub>\u0000(Fe\u0000<sub>0.8</sub>\u0000Co\u0000<sub>0.2</sub>\u0000)\u0000<sub>17</sub>\u0000N\u0000<sub>y</sub>\u0000 (x=0 to 0.5) in which the value of y is 3. The anisotropy field (H\u0000<sub>A</sub>\u0000) in (Sm\u0000<sub>1-x</sub>\u0000Nd\u0000<sub>x</sub>\u0000)\u0000<sub>2</sub>\u0000(Fe\u0000<sub>0.8</sub>\u0000Co\u0000<sub>0.2</sub>\u0000)\u0000<sub>17</sub>\u0000N\u0000<sub>y</sub>\u0000 compounds decreased linearly with increasing x, while the saturation magnetization (J\u0000<sub>s</sub>\u0000) increased. It was found that the H\u0000<sub>A</sub>\u0000 and J\u0000<sub>s</sub>\u0000 of a (Sm\u0000<sub>0.9</sub>\u0000Nd\u0000<sub>0.1</sub>\u0000)\u0000<sub>2</sub>\u0000(Fe\u0000<sub>0.8</sub>\u0000Co\u0000<sub>0.2</sub>\u0000)\u0000<sub>17</sub>\u0000N\u0000<sub>3.07</sub>\u0000 compound were 10.4 MA/m and 193.6×10\u0000<sup>-6</sup>\u0000 Wb-m/kg respectively. Anisotropic epoxy-bonded magnets were prepared from (Sm\u0000<sub>0.9</sub>\u0000Nd\u0000<sub>0.1</sub>\u0000)\u0000<sub>2</sub>\u0000(Fe\u0000<sub>0.8</sub>\u0000Co\u0000<sub>0.2</sub>\u0000)\u0000<sub>17</sub>\u0000N\u0000<sub>3.07</sub>\u0000 powder with particle size ranging from 3 to 5 μm by a compression molding process. The magnetic properties of a typical bonded magnet were (BH)\u0000<sub>max</sub>\u0000=101.8 kJ/m\u0000<sup>3</sup>\u0000, J\u0000<sub>r</sub>\u0000=0.89 T, H\u0000<sub>cJ</sub>\u0000=394 kA/m, and H\u0000<sub>cB</sub>\u0000=314 kA/m. Magnetization jumps were observed on the hysteresis loop of a bonded magnet at 7K.","PeriodicalId":100647,"journal":{"name":"IEEE Translation Journal on Magnetics in Japan","volume":"9 6","pages":"223-230"},"PeriodicalIF":0.0,"publicationDate":"1994-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TJMJ.1994.4565984","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68041813","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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