語系:
繁體中文
English
說明(常見問題)
圖資館首頁
登入
回首頁
到查詢結果
[ author_sort:"shinwari, tauqir." ]
切換:
標籤
|
MARC模式
|
ISBD
Fundamental Aspects of Exchange Bias Effect in (Ni/co)/NixMn 100-x /(Ni/Co) Bilayers, Trilayers and Multilayers On Cu3Au(001).
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Fundamental Aspects of Exchange Bias Effect in (Ni/co)/NixMn 100-x /(Ni/Co) Bilayers, Trilayers and Multilayers On Cu3Au(001).
作者:
Shinwari, Tauqir.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, 2022
面頁冊數:
140 p.
附註:
Source: Dissertations Abstracts International, Volume: 84-04, Section: B.
附註:
Advisor: Kuch, Wolfgang.
Contained By:
Dissertations Abstracts International84-04B.
標題:
Crystal structure.
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29341392
ISBN:
9798352602089
Fundamental Aspects of Exchange Bias Effect in (Ni/co)/NixMn 100-x /(Ni/Co) Bilayers, Trilayers and Multilayers On Cu3Au(001).
Shinwari, Tauqir.
Fundamental Aspects of Exchange Bias Effect in (Ni/co)/NixMn 100-x /(Ni/Co) Bilayers, Trilayers and Multilayers On Cu3Au(001).
- Ann Arbor : ProQuest Dissertations & Theses, 2022 - 140 p.
Source: Dissertations Abstracts International, Volume: 84-04, Section: B.
Thesis (Ph.D.)--Freie Universitaet Berlin (Germany), 2022.
This item must not be sold to any third party vendors.
This study is concerned with three broad topics facing the technological application of exchange bias (EB). The antiferromagnetism of single-crystalline NixMn100−x ultrathin films in contact with ferromagnetic (FM) Co (Ni/Co) film(s) in bilayers, trilayers and multilayers on Cu3Au(001) deposited under ultrahigh vacuum conditions, is investigated by means of magneto-optical Kerr effect (MOKE). In the first study, the aim is to identify the contribution of interface and bulk antiferromagnetic (AFM) spins to the EB. Structural or chemical defects are deliberately introduced at the surface of the AFM layer or at a certain depth inside the AFM layer. The creation of defects in the bulk of the AFM layer enhances the magnitude of EB and its blocking temperature. It is also observed that the deeper the insertion of defects, the higher the value of the EB field and coercivity. These findings are discussed as the effect of additional pinning centers in the bulk of the AFM layer. In the second problem, we compare artificially layered [Ni/Mn] films with the corresponding disordered NixMn100−x alloys with almost the same Ni/Mn ratio and the same film thickness. It is revealed that the perpendicular interatomic lattice distance is decreased in the artificially layered [Ni/Mn] samples. These changes in the structure are discussed as the buckling or reconstruction of Mn atoms (probably Ni atoms too) in the bulk and also at the surface, which causes higher coercivity, EB-field, and stronger interlayer exchange coupling. In the third project, we unveil that a cover of Mn films that exhibit contracted vertical-to-in-plane lattice constant ratio and expanded structures at different thickness levels, induces perpendicular magnetic anisotropy (PMA) in an FM layer, confirming that the interlayer distance in the AFM can be a crucial parameter for establishing perpendicular magnetization.
ISBN: 9798352602089Subjects--Topical Terms:
915771
Crystal structure.
Fundamental Aspects of Exchange Bias Effect in (Ni/co)/NixMn 100-x /(Ni/Co) Bilayers, Trilayers and Multilayers On Cu3Au(001).
LDR
:03128nmm a2200385 4500
001
636170
005
20230501063918.5
006
m o d
007
cr#unu||||||||
008
230724s2022 ||||||||||||||||| ||eng d
020
$a
9798352602089
035
$a
(MiAaPQ)AAI29341392
035
$a
(MiAaPQ)FreiBerlin_fub18835264
035
$a
AAI29341392
040
$a
MiAaPQ
$c
MiAaPQ
100
1
$a
Shinwari, Tauqir.
$3
942546
245
1 0
$a
Fundamental Aspects of Exchange Bias Effect in (Ni/co)/NixMn 100-x /(Ni/Co) Bilayers, Trilayers and Multilayers On Cu3Au(001).
260
1
$a
Ann Arbor :
$b
ProQuest Dissertations & Theses,
$c
2022
300
$a
140 p.
500
$a
Source: Dissertations Abstracts International, Volume: 84-04, Section: B.
500
$a
Advisor: Kuch, Wolfgang.
502
$a
Thesis (Ph.D.)--Freie Universitaet Berlin (Germany), 2022.
506
$a
This item must not be sold to any third party vendors.
520
$a
This study is concerned with three broad topics facing the technological application of exchange bias (EB). The antiferromagnetism of single-crystalline NixMn100−x ultrathin films in contact with ferromagnetic (FM) Co (Ni/Co) film(s) in bilayers, trilayers and multilayers on Cu3Au(001) deposited under ultrahigh vacuum conditions, is investigated by means of magneto-optical Kerr effect (MOKE). In the first study, the aim is to identify the contribution of interface and bulk antiferromagnetic (AFM) spins to the EB. Structural or chemical defects are deliberately introduced at the surface of the AFM layer or at a certain depth inside the AFM layer. The creation of defects in the bulk of the AFM layer enhances the magnitude of EB and its blocking temperature. It is also observed that the deeper the insertion of defects, the higher the value of the EB field and coercivity. These findings are discussed as the effect of additional pinning centers in the bulk of the AFM layer. In the second problem, we compare artificially layered [Ni/Mn] films with the corresponding disordered NixMn100−x alloys with almost the same Ni/Mn ratio and the same film thickness. It is revealed that the perpendicular interatomic lattice distance is decreased in the artificially layered [Ni/Mn] samples. These changes in the structure are discussed as the buckling or reconstruction of Mn atoms (probably Ni atoms too) in the bulk and also at the surface, which causes higher coercivity, EB-field, and stronger interlayer exchange coupling. In the third project, we unveil that a cover of Mn films that exhibit contracted vertical-to-in-plane lattice constant ratio and expanded structures at different thickness levels, induces perpendicular magnetic anisotropy (PMA) in an FM layer, confirming that the interlayer distance in the AFM can be a crucial parameter for establishing perpendicular magnetization.
590
$a
School code: 0693.
650
4
$a
Crystal structure.
$3
915771
650
4
$a
Corrosion resistance.
$3
942548
650
4
$a
Glass substrates.
$3
942549
650
4
$a
Brain research.
$3
942550
650
4
$a
Magnetic fields.
$3
203345
650
4
$a
Sensors.
$3
915776
650
4
$a
Microscopy.
$3
189037
650
4
$a
Misfit dislocations.
$3
942551
650
4
$a
Molecular beam epitaxy.
$3
467331
650
4
$a
Anisotropy.
$3
207917
650
4
$a
Nanotechnology.
$3
193873
650
4
$a
Magnetism.
$3
203348
650
4
$a
Transistors.
$3
200135
650
4
$a
Alloys.
$3
206325
650
4
$a
Thin films.
$3
203678
650
4
$a
Asymmetry.
$3
942552
650
4
$a
Interfaces.
$3
942553
650
4
$a
Annealing.
$3
942554
650
4
$a
Condensed matter physics.
$3
708726
650
4
$a
Electromagnetics.
$3
708560
650
4
$a
Materials science.
$3
221779
650
4
$a
Neurosciences.
$3
211508
650
4
$a
Physics.
$3
179414
690
$a
0652
690
$a
0611
690
$a
0607
690
$a
0794
690
$a
0317
690
$a
0605
710
2
$a
Freie Universitaet Berlin (Germany).
$3
942547
773
0
$t
Dissertations Abstracts International
$g
84-04B.
790
$a
0693
791
$a
Ph.D.
792
$a
2022
793
$a
English
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29341392
筆 0 讀者評論
全部
電子館藏
館藏
1 筆 • 頁數 1 •
1
條碼號
館藏地
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
000000223074
電子館藏
1圖書
電子書
EB 2022
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
多媒體檔案
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=29341392
評論
新增評論
分享你的心得
Export
取書館別
處理中
...
變更密碼
登入