期刊文献+
共找到4篇文章
< 1 >
每页显示 20 50 100
泥浆的性能参数在泥水平衡盾构施工中的应用 被引量:2
1
作者 汪高峰 詹清枫 +2 位作者 张展 郭启先 张树凯 《石油天然气学报》 CAS 2018年第2期34-38,共5页
泥浆对泥水平衡盾构的掘进效果影响巨大,泥浆应用技术的好坏直接影响工程进度、成本、安全、质量.系统研究了泥浆性能参数及其变化规律,以工程中常见的卵石、黏土、砂层为例,深入剖析了泥浆在不同环境下的应用实例.
关键词 泥水平衡盾构 泥浆性能 变化规律
下载PDF
Exchange-coupling-induced fourfold magnetic anisotropy in CoFeB/FeRh bilayer grown on SrTiO_(3)(001)
2
作者 Qingrong Shao Jing Meng +6 位作者 Xiaoyan Zhu Yali Xie Wenjuan Cheng Dongmei Jiang Yang Xu Tian Shang qingfeng zhan 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第8期605-611,共7页
Exchange coupling across the interface between a ferromagnetic(FM)layer and an antiferromagnetic(AFM)or another FM layer may induce a unidirectional magnetic anisotropy and/or a uniaxial magnetic anisotropy,which has ... Exchange coupling across the interface between a ferromagnetic(FM)layer and an antiferromagnetic(AFM)or another FM layer may induce a unidirectional magnetic anisotropy and/or a uniaxial magnetic anisotropy,which has been extensively studied due to the important application in magnetic materials and devices.In this work,we observed a fourfold magnetic anisotropy in amorphous Co Fe B layer when exchange coupling to an adjacent Fe Rh layer which is epitaxially grown on an SrTiO_(3)(001)substrate.As the temperature rises from 300 K to 400 K,Fe Rh film undergoes a phase transition from AFM to FM phase,the induced fourfold magnetic anisotropy in the Co Fe B layer switches the orientation from the Fe Rh<110>to Fe Rh<100>directions and the strength is obviously reduced.In addition,the effective magnetic damping as well as the two-magnon scattering of the Co Fe B/Fe Rh bilayer also remarkably increase with the occurrence of magnetic phase transition of Fe Rh.No exchange bias is observed in the bilayer even when Fe Rh is in the nominal AFM state,which is probably because the residual FM Fe Rh moments located at the interface can well separate the exchange coupling between the below pinned Fe Rh moments and the Co Fe B moments. 展开更多
关键词 magnetic anisotropy phase transition CoFeB/FeRh exchange coupling
原文传递
Magnetoelastic coupling effect of Fe10Co90 films grown on different flexible substrates
3
作者 Jiapeng Zhao Qinhuang Guo +5 位作者 Huizhong Yin Jintang Zou Zhenjie Zhao Wenjuan Cheng Dongmei Jiang qingfeng zhan 《Chinese Physics B》 SCIE EI CAS CSCD 2020年第11期479-484,共6页
The magneto-mechanical coupling effect and magnetic anisotropy of Fe10Co90(FeCo)films deposited on silicon wafer(Si),flexible polyethylene terephthalate(PET),freestanding polydimethylsiloxane(PDMS),and pre-stretched 2... The magneto-mechanical coupling effect and magnetic anisotropy of Fe10Co90(FeCo)films deposited on silicon wafer(Si),flexible polyethylene terephthalate(PET),freestanding polydimethylsiloxane(PDMS),and pre-stretched 20%PDMS substrates were studied in detail.The loop squareness ratio Mr/Ms and the coercive Hc of the FeCo film grown on a PET substrate can be obviously tuned by applying a small tensile-bending strain,and those of the FeCo film grown on a freestanding PDMS substrate can only be slightly changed when applying a relatively large tensile bending strain.For the FeCo film prepared on a 20%pre-stretched PDMS,a wrinkled morphology is obtained after removing the pre-strain.The wrinkled FeCo film can keep the magnetic properties unchanged when applying a relatively large tensile bending strain perpendicular to the wrinkles.This reveals that PDMS is an ideal substrate for magnetic films to realize flexible immutability.Our results may help for developing flexible magnetic devices. 展开更多
关键词 flexible substrates FeCo films magnetic anisotropy magneto-mechanical coupling effect
原文传递
Spin order and dynamics in the topological rare-earth germanide semimetals
4
作者 Yuhao Wang Zhixuan Zhen +9 位作者 Jing Meng Igor Plokhikh Delong Wu Dariusz J.Gawryluk Yang Xu qingfeng zhan Ming Shi Ekaterina Pomjakushina Toni Shiroka Tian Shang 《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS CSCD 2024年第10期113-127,共15页
The REAl(Si,Ge)(RE=rare earth)family,known to break both the inversion-and time-reversal symmetries,represents one of the most suitable platforms for investigating the interplay between correlated-electron phenomena a... The REAl(Si,Ge)(RE=rare earth)family,known to break both the inversion-and time-reversal symmetries,represents one of the most suitable platforms for investigating the interplay between correlated-electron phenomena and topologically nontrivial bands.Here,we report on systematic magnetic,transport,and muon-spin rotation and relaxation(μSR)measurements on(Nd,Sm)AlGe single crystals,which exhibit antiferromagnetic(AFM)transitions at T_(N)=6.1 and 5.9 K,respectively.In addition,NdAlGe undergoes also an incommensurate-to-commensurate ferrimagnetic transition at 4.5 K.Weak transverse-fieldμSR measurements confirm the AFM transitions,featuring a~90%magnetic volume fraction.Zero-field(ZF)μSR measurements reveal a more disordered internal field distribution in NdAlGe than in SmAlGe,reflected in a larger transverse muon-spin relaxation rateλTat T<<T_(N).This may be due to the complex magnetic structure of NdAlGe,which undergoes a series of metamagnetic transitions in an external magnetic field,while SmAlGe shows only a robust AFM order.In NdAlGe,the topological Hall effect(THE)appears between the first and the second metamagnetic transitions for H‖c,while it is absent in SmAlGe.Such THE in NdAlGe is most likely attributed to the field-induced topological spin textures.The longitudinal muon-spin relaxation rateλL,diverges near the AFM order,followed by a clear drop at T<T_N.In the magnetically ordered state,spin fluctuations are significantly stronger in NdAlGe than in SmAlGe.In general,our longitudinal-fieldμSR data indicate vigorous spin fluctuations in NdAlGe,thus providing valuable insights into the origin of THE and of the possible topological spin textures in REAl(Si,Ge)Weyl semimetals. 展开更多
关键词 magneticWeyl semimetals topological Hall effect spin fluctuations μSR
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部