Effect of magnetism on the atomic structure and properties of Σ5 grain boundaries in fcc Fe and fcc Ni

Very few electron microscopy papers have been published on the atomic structure of the copper oxide based superconductor surfaces. Zandbergen et al. have reported that the surface of YBa2Cu3O7-δ was such that the terminating layer sequence is bulk-Y-CuO2-BaO-CuO-BaO, whereas the interruption at the grain boundaries is bulk-Y-CuO2-BaO-CuO. Bursill et al. reported that HREM images of the termination at the surface are in good agreement with calculated images with the same layer sequence as observed by Zandbergen et al. but with some oxygen deficiency in the two surface layers. In both studies only one or a few surfaces were studied.

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Morphology and atomic structure of segregated grain boundaries in Cu-Sb

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100121673 ◽

1992 ◽

Vol 50 (1) ◽

pp. 254-255

Author(s):

R. W. Fonda ◽

D. E. Luzzi

Keyword(s):

Grain Boundary ◽

Grain Boundaries ◽

Intergranular Fracture ◽

Atomic Structure ◽

Copper Alloys ◽

Polycrystalline Materials ◽

Grain Boundary Embrittlement ◽

Boundary Embrittlement

The properties of polycrystalline materials are strongly dependant upon the strength of internal boundaries. Segregation of solute to the grain boundaries can adversely affect this strength. In copper alloys, segregation of either bismuth or antimony to the grain boundary will embrittle the alloy by facilitating intergranular fracture. Very small quantities of bismuth in copper have long been known to cause severe grain boundary embrittlement of the alloy. The effect of antimony is much less pronounced and is observed primarily at lower temperatures. Even though moderate amounts of antimony are fully soluble in copper, concentrations down to 0.14% can cause grain boundary embrittlement.

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Atomic structure of [0001]-tilt grain boundaries in ZnO: A high-resolution TEM study of fiber-textured thin films

Physical Review B ◽

10.1103/physrevb.70.125415 ◽

2004 ◽

Vol 70 (12) ◽

Cited By ~ 53

Author(s):

Fumiyasu Oba ◽

Hiromichi Ohta ◽

Yukio Sato ◽

Hideo Hosono ◽

Takahisa Yamamoto ◽

...

Keyword(s):

Thin Films ◽

High Resolution ◽

Grain Boundaries ◽

Atomic Structure ◽

High Resolution Tem

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Atomic structure of grain boundaries in UO2 Bicrystals: A coupled high resolution transmission electron Microscopy/Atomistic simulation approach

Scripta Materialia ◽

10.1016/j.scriptamat.2021.114191 ◽

2022 ◽

Vol 206 ◽

pp. 114191

Author(s):

Emeric Bourasseau ◽

Claire Onofri ◽

Amani Ksibi ◽

Xavière Iltis ◽

Renaud C. Belin ◽

...

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

High Resolution ◽

Grain Boundaries ◽

Atomic Structure ◽

Atomistic Simulation ◽

Simulation Approach ◽

Transmission Electron

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Atomic Structure and Electrical Activity of Grain Boundaries and Ruddlesden-Popper Faults in Cesium Lead Bromide Perovskite

Advanced Materials ◽

10.1002/adma.201805047 ◽

2018 ◽

Vol 31 (4) ◽

pp. 1805047 ◽

Cited By ~ 22

Author(s):

Arashdeep Singh Thind ◽

Guangfu Luo ◽

Jordan A. Hachtel ◽

Maria V. Morrell ◽

Sung Beom Cho ◽

...

Keyword(s):

Electrical Activity ◽

Grain Boundaries ◽

Atomic Structure ◽

Lead Bromide

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Atomic Structure and Property Correlation in Pulsed Laser Deposited High -Tc Films

MRS Proceedings ◽

10.1557/proc-526-281 ◽

1998 ◽

Vol 526 ◽

Author(s):

R. Kalyanaraman ◽

S. Oktyabrsky ◽

K. Jagannadham ◽

J. Narayan

Keyword(s):

Electron Microscopy ◽

Transmission Electron Microscopy ◽

Grain Boundaries ◽

Atomic Structure ◽

Substrate Surface ◽

Pulsed Laser ◽

Structure And Property ◽

Transmission Electron ◽

Tilt Boundaries ◽

Z Contrast

AbstractThe atomic structure of grain boundaries in pulsed laser deposited YBCO/MgO thin films have been studied using transmission electron microscopy. The films have perfect texturing with YBCO(001)//MgO(001), giving rise to low-angle [001] tilt boundaries from the grains with the c-axis normal to substrate surface. Low angle grain boundaries have been found to be aligned preferentially along (100) and (110) interface planes. The energy of (110) boundary planes described by an alternating array of [100] and [010] dislocation is found to be comparable to the energy of a (100) boundary. The existence of these split dislocations is shown to further reduce the theoretical current densities of these boundaries indicating that (110) boundaries carry less current as compared to (100) boundaries of the same misorientation angle. Further, Z-contrast transmission electron microscopy of a 42° asymmetric high-angle grain boundary of YBCO shows evidence for the existence of boundary fragments and a reduced atomic density along the boundary plane

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