語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
Oxides Surfaces and Novel Electronic...
~
Koirala, Pratik.
FindBook
Google Book
Amazon
博客來
Oxides Surfaces and Novel Electronic Properties.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Oxides Surfaces and Novel Electronic Properties./
作者:
Koirala, Pratik.
出版者:
Ann Arbor : ProQuest Dissertations & Theses, : 2017,
面頁冊數:
177 p.
附註:
Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
Contained By:
Dissertation Abstracts International78-10B(E).
標題:
Condensed matter physics. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10280063
ISBN:
9781369818918
Oxides Surfaces and Novel Electronic Properties.
Koirala, Pratik.
Oxides Surfaces and Novel Electronic Properties.
- Ann Arbor : ProQuest Dissertations & Theses, 2017 - 177 p.
Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
Thesis (Ph.D.)--Northwestern University, 2017.
The scope of this thesis extends to the study of surface structures and electronic properties in a number of complex oxides. The c(6x2) surface reconstruction on SrTiO3 (001) was solved using a combination of plan view transmission electron microscopy imaging, atomic resolution secondary electron imaging, and density functional theory calculations. This work provided fundamental insights on the effects of dielectric screening in secondary electron generation. A thorough analysis on the limitation and functionality of transmission plan view imaging showed that the kinematical approximations used in the separation of top and bottom surfaces is only valid in thin samples (∼5 nm or less for SrTiO3). The presence of an inversion center in the surface structure also made separation of the top and bottom surfaces more robust.
ISBN: 9781369818918Subjects--Topical Terms:
3173567
Condensed matter physics.
Oxides Surfaces and Novel Electronic Properties.
LDR
:03295nmm a2200325 4500
001
2126314
005
20171128071849.5
008
180830s2017 ||||||||||||||||| ||eng d
020
$a
9781369818918
035
$a
(MiAaPQ)AAI10280063
035
$a
AAI10280063
040
$a
MiAaPQ
$c
MiAaPQ
100
1
$a
Koirala, Pratik.
$3
3288412
245
1 0
$a
Oxides Surfaces and Novel Electronic Properties.
260
1
$a
Ann Arbor :
$b
ProQuest Dissertations & Theses,
$c
2017
300
$a
177 p.
500
$a
Source: Dissertation Abstracts International, Volume: 78-10(E), Section: B.
500
$a
Adviser: Laurence D. Marks.
502
$a
Thesis (Ph.D.)--Northwestern University, 2017.
520
$a
The scope of this thesis extends to the study of surface structures and electronic properties in a number of complex oxides. The c(6x2) surface reconstruction on SrTiO3 (001) was solved using a combination of plan view transmission electron microscopy imaging, atomic resolution secondary electron imaging, and density functional theory calculations. This work provided fundamental insights on the effects of dielectric screening in secondary electron generation. A thorough analysis on the limitation and functionality of transmission plan view imaging showed that the kinematical approximations used in the separation of top and bottom surfaces is only valid in thin samples (∼5 nm or less for SrTiO3). The presence of an inversion center in the surface structure also made separation of the top and bottom surfaces more robust.
520
$a
Surface studies of two other oxides, KTaO3 and NdGaO3, provided understanding on the mechanism of surface heterogeneity and segregation. In the case of KTaO3, selective ion sputtering and the loss of K resulted in large stoichiometric variations at the surface. Annealing of such samples led to the formation of a potassium deficient tetragonal phase (K 6Ta10.8O30) on the surface. A similar phenomenon was also observed in NdGaO3.
520
$a
Exploratory surface studies of the rare earth scandates (ReScO3 , Re = Gd, Tb, Dy) led to the observation of large flexoelectric bending inside an electron microscope. Thin rods of these scandates bent by up to 90 degree under a focused electron beam; the bending was fully reversible. Ex-situ measurements of flexoelectric coe cient performed by an- other graduate student, Christopher Mizzi, confirmed that the scandates have a large flexocoupling voltage (∼42 V).
520
$a
Electronic structure of the lanthanide scandates was studied using temperature depen- dent X-ray photoelectron spectroscopy and hybrid density functional theory calculations. The amount of charging under X-ray illumination was greatly reduced with increasing temperature owing to the presence of oxygen vacancies and surface band gap reduction. These results also indicated that the 4f-electrons are active components of the valence band electronic structure. We believe that the lanthanide scandates are a rich playground of material properties and have potential for applications in electronic and nano-mechanical devices.
590
$a
School code: 0163.
650
4
$a
Condensed matter physics.
$3
3173567
650
4
$a
Chemistry.
$3
516420
690
$a
0611
690
$a
0485
710
2
$a
Northwestern University.
$b
Materials Science and Engineering.
$3
1058406
773
0
$t
Dissertation Abstracts International
$g
78-10B(E).
790
$a
0163
791
$a
Ph.D.
792
$a
2017
793
$a
English
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10280063
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
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
W9336926
電子資源
01.外借(書)_YB
電子書
EB
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入