金属磁性功能材料进展：1994—1995

本文综述了１９９４－１９９５年若干金属磁性功能材料的新进展。这些材料包括：ＮｄＦｅＢ系钠米型永磁材料，巨磁电阻多层膜磁头材料，高磁导率和高电阻率的新软磁材料，多层膜Ｋｅｒｒ磁光材料，Ｆｅ－Ｎ系高饱和磁极化强度材料和纳米晶软磁材料。     

Co／Pt多层膜磁光记录介质材料研究进展

叙述Ｃｏ／Ｐｔ多层膜的磁光性能，以及其尺寸、制备技术、工艺条件、结构等因素对磁光性能的影响，并介绍上述材料的研究进展。     

第六届MMM和InterMag国际学术会议简介

介绍第六届ＭＭＭ－ＩｎｔｅｒＭａｇ会议的情况。重点介绍磁记录材料和技术，磁光存贮介质，多层膜，巨磁阻效应，巨磁阻抗效应，稀土永磁材料，人造结构磁体等的研究情况和发展趋势，以及有关Ｆｅ１６Ｎ２巨磁矩争议方面的讨论。     

金属磁性功能材料的最近进展

本文综述了若干新的金属及其他磁性功能材料的最近进展。这些材料包括巨磁电阻材料、高密度磁记录材料、纳米晶软磁材料、粘结Ｎｄ－Ｆｅ－Ｂ和Ｓｍ－Ｆｅ－Ｎ永磁材料、金属原子簇磁性材料和含Ｂｉ石榴石型铁氧体磁光膜材料。     

1999—2000年金属磁性功能材料新进展

本文是从1997年起关于金属磁性功能材料每年若干新进展综合评述的继续。这次内容包括：（1）新的Fe-Si合金材料;(2)高频软磁金属材料;（3）Sm-Co系稀土永磁材料;（4）多层膜磁光材料;（5）具有特殊磁致伸缩的磁性材料。     

1996年—1997年磁性功能材料研究和应用进展

综述了１９９６年－１９９７年间若干磁性功能材料研究和应用的进展。内容包括：（１）射频和超高频巨磁电阻抗材料;（２）新型磁浮列车用高温超导材料;（３）Ｋｅｒｒ显微术和Ｈａｌｌ显微术在磁材料研究中的应用,（４）磁光隔离器和磁光传感器;（５）超高频磁膜电感器和薄膜变压器。     

TbFeCo/(Pt,Pd,NdCo)多层膜的磁光特性

为了提高记录密度而力求光磁记录的短波长化,这就要求在短波长区域磁光效果大的材料,进一步考虑到磁特性,力求其成分和制取条件的最佳化。现在常用的非晶态ＴｂＦｅＣｏ膜,为了减小其在短波长区域的Ｋｅｒｒ回转角,就必须通过添加其它元素来提高它在短波长区域的磁光效果。为了研究通过添加Ｐｔ、Ｐｄ和ＮｄＣｏ而使得ＴｂＦｅＣｏ能在短波长区域使用的可能性,而制备了ＴｂＦｅＣｏ／（Ｐｔ,Ｐｄ,ＮｄＣｏ）多层膜和ＮｄＴｂＦｅＣｏ合金膜。研究了添加元素、Ｐｔ、Ｐｄ、ＮｄＣｏ各层厚度对多层膜的磁性和磁光特性的影响。研究用的…     

1998～1999年金属磁性功能材料新进展

本文是从１９９７年起关于金属磁性功能材料每年若干新进展综合评述的继续,这次内容包括：⑴多层膜巨磁电阻材料;⑵高硅和薄带取向硅钢材料;⑶ＲＦｅ１２型新稀土永磁材料;⑷稀土磁致冷新材料;⑸发展中的新Ｆｅ－Ａｌ系材料。     

Co/Pt多层膜的调制结构对磁光性能的影响

研究了Ｃｏ／Ｐｔ多层膜中,Ｃｏ层厚度,Ｃｏ、Ｐｔ含量比,溅射温度对多层膜磁光性能的影响。研究发现Ｃｏ层厚度及Ｃｏ、Ｐｔ含量比对Ｃｏ／ｐｔ多层膜的磁光性能起决定性影响。当ｔＣｏ〈０．４ｎｍ,ｔＣｏ／ｔＰｔ＝１／２时。可获得较好的综合磁光性能;适当提高溅射时基体的温度,可改善多层膜的结晶性并获得较好的调制周期结构,最终改善其磁光性能。     

单磁极磁头用Fe-Co膜及Fe-Co／Ni-Cr多层膜的磁性

随着磁盘面记录密度的不断增长，对其磁头的写入磁场也要求越来越高，垂直记录方法是使面记录密度超过100Gb／in^2的一种很有希望的方法。这就要求作为记录磁头材料在具有高的饱和磁感(Bs)同时还要具有优异的软磁性，特别是剩磁(Br)要小。日本日立的罔田泰行等开发出一种新的加底层(非磁性层)的单层膜和多层膜。这种膜是采用RF磁溅射方法制成。     

Study of magnetic and magneto-optical properties of heavily doped bismuth substitute yttrium iron garnet (Bi:YIG) film

The magnetic and magneto-optical properties of heavily doped Bi:YIG film were studied. The film was deposited by radio frequency magnetron sputtering method and crystallized by rapid recurrent thermal annealing (RRTA). The results show that the RRTA treated film has good properties both in microwave and optical wave band. The saturation magnetization of the film on different substrates varies from 135.7 to 138.6 kA·m -1 . The coercive field of the film on GGG substrate is about 0.32 kA·m -1 , while about 0.8-1.43 kA·m -1 on YAG substrate and 1.75 kA·m-1 on Al2O3 substrate. The Faraday angle is about 3-5 (°)·um-1 when optical wavelength ranges at 450-600 nm. The transmission spectra of the Bi:YIG films on three substrates has similar change as annealing temperature below 800 ℃. Specially, when annealing temperature is above 800 ℃ a step is observed between 550 and 650 nm wavelength for the film deposited on Al2O3 substrate.Three results are very useful in magneto-optical recording application and integrated microwave devices.     

Magneto-optic lanthanide materials

Lanthanide materials present a large variety of magneto-optical phenomena. The recent discovery of a new record 90° Kerr rotation in CeSb has renewed the interest in the fascinating magneto-optical properties of this class of materials. In this paper a classification of lanthanide materials containing no other magnetic element into four classes is proposed to account for the different magneto-optical behaviour. The classes and the prototypes are: 1. magnetic semiconductors: EuSe, TmSe_0.32Te_0.68, cleaved Tm_0.5Eu_0.5Se; 2. magnetic metals: TmSe_0.87Te_0.13, polished Tm_0.5Eu_0.5Se; 3. metals with induced moments: PrSb; 4. highly hybridized magnetic metals and semimetals: CeS, CeSb.     

A magneto-optic imager for NDT applications

The paper deals with magneto-optical methods utilized for the nondestructive testing (NDT) of materials and technical components. The described imaging device (based on a garnet film) is able to operate in two different modes. In the static mode it makes visible changes in the magnetic permeability of the tested materials (e.g. the presence of Fe- phase in austenitic steels). In the alternating mode the sensor images changes of electrical resistivity (e.g. small holes in copper foils). Examples of the application of the methods are presented and the results are discussed.     

Characterization and optimization of magnetic garnet films for magneto-optical visualization of magnetic field distributions

Rare-earth iron garnet films with in-plane anisotropy grown on (111)-oriented substrates can be used as magneto-optical indicator films for visualization of magnetic leakage fields in nondestructive evaluation. The influence of Faraday rotation, Faraday ellipticity, absorption and film thickness on the performance of a magneto-optical indicator film is investigated. A new optimization method is introduced and compared with the method of contrast optimization. The theory is experimentally verified and an application example is presented.     

烧结工艺对粉末烧结多孔材料微观结构与力学性能影响

本文进行了烧结气氛和烧结温度对支撑体孔径、透过性能影响的研究。环拉实验结果表明,氢气烧结样品的抗拉强度87.56MPa,氢气+氯化铵活化烧结样品115.20MPa,强度提高了30%。通过烧结温度对支撑体力学性能影响的研究,得到了支撑体致密度和力学性能之间的关系,可实现通过测试多孔材料的密度来预测多孔材料的强度。     

化学接枝法提高CB/HDPE PTC材料的稳定性研究

用化学接枝法对炭黑填充高密度聚乙烯（CB／HDPE）PTC材料的稳定性，即重复使用性进行了研究，得出此种方法能有效地改善本配方PTC材料的性能和稳定性，具有很强的实用价值。     

纳米材料的马氏体相变

简述了纳米材料的定义、制备、结构、性能和应用。总结了马氏体相变的尺寸效应。概括了近十年来,纳米材料的马氏体相变和热力学研究的最新结果。     

The investigation of nanostructures of magnetic recording media by TEM

Diverse applications of transmission electron microscopy techniques used in investigating the nanostructures of magnetic recording materials are presented. Specimen preparation methods are discussed for the specific case of magnetic thin film recording media. Investigations of the crystallographic orientation, grain size and distribution, and interfacial nanostructures are presented.     

SmCo非晶及纳米晶薄膜的磁性及微结构

稀土过渡族金属磁性薄膜作为高密度磁记录材料引起科技界的广泛关注。作为磁记录介质要求具有小的磁粒尺寸才可能有高的记录密度。通过溅射制出非晶膜，再通过控制回火使其晶化得到小的磁粒尺寸是比较好的方法。我们用多靶磁控溅射制备出非晶SmCo薄膜，研究其晶化和磁性能及微结构之间的变化关系。并对其磁性变化规律进行了讨论。