The advanced ion-milling method for preparation of thin film using ion slicer: Application to a sample recovered from diamond-anvil cell

An effective and convenient method about molybdenum metal thin film microcircuit was developed on diamond anvil cell(DAC) under high pressure. Alumina film was used as the protective layer and sputtered on DAC. By using this method, we studied the electrical resistance variation about nanoparticles ZnS power up to 36GPa. The reversible phase transition had been reflected clearly by the electrical resistance measurements with sample.

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Preparation of thin-film-metal/6H-SiC TEM specimens by RPR ion milling

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100149404 ◽

1993 ◽

Vol 51 ◽

pp. 714-715

Author(s):

J.S. Bow ◽

F. Shaapur ◽

M.J. Kim ◽

R.W. Carpenter

Keyword(s):

Thin Film ◽

Good Condition ◽

Ceramic Materials ◽

Amorphous Layer ◽

Thin Metal Film ◽

Material System ◽

Ion Milling ◽

Bonding Structure ◽

Metal Ceramic ◽

Milling Method

HRTEM has proven to be the best method to study the interface structure of heterogeneous materials at the atomic level. One of the critical steps in these experiments is preparation of sufficiently thin cross section TEM (XTEM) specimens with different materials on both sides of the interface in good condition for HRTEM, especially when metal/ceramic materials are of interest. For the material system of a thin metal film on 6H-SiC substrate, the conventional ion milling method did not produce satisfactory XTEM specimens, because of the large difference in ion milling rates between metals and SiC. Most of the metal was ion milled way before a thin area of SiC was obtained. Two very important parameters, the thickness of the metal thin film normal to the interface and the atomic bonding structure across the interface were usually lost. Fig.l shows an example. The original thickness of the metal was 100 nm, and most of that has been removed. An amorphous layer of 1 to 1.5 nm thickness apparently due to ion milling formed at the metal/SiC interface.

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Microtomy of spherical Al2O3 powders

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010007429x ◽

1983 ◽

Vol 41 ◽

pp. 74-75

Author(s):

E.J. Jenkins ◽

D.S. Tucker ◽

J.J. Hren

Keyword(s):

Thin Film ◽

Size Range ◽

Particle Aggregation ◽

Ion Milling ◽

Thin Sections ◽

Α Phase ◽

Convenient Means ◽

Van Der Waals Attraction ◽

Negative Feature ◽

Film Substrate

The size range of mineral and ceramic particles of one to a few microns is awkward to prepare for examination by TEM. Electrons can be transmitted through smaller particles directly and larger particles can be thinned by crushing and dispersion onto a substrate or by embedding in a film followed by ion milling. Attempts at dispersion onto a thin film substrate often result in particle aggregation by van der Waals attraction. In the present work we studied 1-10 μm diameter Al2O3 spheres which were transformed from the amprphous state to the stable α phase.After the appropriate heat treatment, the spherical powders were embedded in as high a density as practicable in a hard EPON, and then microtomed into thin sections. There are several advantages to this method. Obviously, this is a rapid and convenient means to study the microstructure of serial slices. EDS, ELS, and diffraction studies are also considerably more informative. Furthermore, confidence in sampling reliability is considerably enhanced. The major negative feature is some distortion of the microstructure inherent to the microtoming operation; however, this appears to have been surprisingly small. The details of the method and some typical results follow.

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Microstructural characterization of YBa2Cu3O7-x thin films formed by metalorganic CVD

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100089718 ◽

1991 ◽

Vol 49 ◽

pp. 1080-1081

Author(s):

P. Lu ◽

W. Huang ◽

C.S. Chern ◽

Y.Q. Li ◽

J. Zhao ◽

...

Keyword(s):

Thin Film ◽

Thin Films ◽

Critical Current Density ◽

Critical Current ◽

Current Density ◽

Film Growth ◽

Chemical Vapor ◽

Microstructural Characterization ◽

Ion Milling ◽

Conventional Grinding

The YBa2Cu3O7-x thin films formed by metalorganic chemical vapor deposition(MOCVD) have been reported to have excellent superconducting properties including a sharp zero resistance transition temperature (Tc) of 89 K and a high critical current density of 2.3x106 A/cm2 or higher. The origin of the high critical current in the thin film compared to bulk materials is attributed to its structural properties such as orientation, grain boundaries and defects on the scale of the coherent length. In this report, we present microstructural aspects of the thin films deposited on the (100) LaAlO3 substrate, which process the highest critical current density.Details of the thin film growth process have been reported elsewhere. The thin films were examined in both planar and cross-section view by electron microscopy. TEM sample preparation was carried out using conventional grinding, dimpling and ion milling techniques. Special care was taken to avoid exposure of the thin films to water during the preparation processes.

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High-yield fabrication of perpendicularly magnetised synthetic antiferromagnetic nanodiscs

Nano Research ◽

10.1007/s12274-021-3307-1 ◽

2021 ◽

Author(s):

Emma N. Welbourne ◽

Tarun Vemulkar ◽

Russell P. Cowburn

Keyword(s):

Thin Film ◽

Magnetic Properties ◽

Sacrificial Layer ◽

Nanosphere Lithography ◽

High Yield ◽

Perpendicular Anisotropy ◽

Ion Milling ◽

Lift Off

AbstractSynthetic antiferromagnetic (SAF) particles with perpendicular anisotropy display a number of desirable characteristics for applications in biological and other fluid environments. We present an efficient and effective method for the patterning of ultrathin Ruderman-Kittel-Kasuya-Yoshida coupled, perpendicularly magnetised SAFs using a combination of nanosphere lithography and ion milling. A Ge sacrificial layer is utilised, which provides a clean and simple lift-off process, as well as maintaining the key magnetic properties that are beneficial to target applications. We demonstrate that the method is capable of producing a particularly high yield of well-defined, thin film based nanoparticles.

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Bulk modulus of H2O across the ice VII–ice X transition measured by time-resolved x-ray diffraction in dynamic diamond anvil cell experiments

Physical Review B ◽

10.1103/physrevb.103.064104 ◽

2021 ◽

Vol 103 (6) ◽

Author(s):

A. S. J. Méndez ◽

F. Trybel ◽

R. J. Husband ◽

G. Steinle-Neumann ◽

H.-P. Liermann ◽

...

Keyword(s):

Bulk Modulus ◽

Diamond Anvil Cell ◽

X Ray Diffraction ◽

Time Resolved ◽

X Ray ◽

Diamond Anvil

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High temperature diamond anvil cell with the laser heating

High Pressure Research ◽

10.1080/08957958908202492 ◽

1989 ◽

Vol 1 (5-6) ◽

pp. 337-340 ◽

Cited By ~ 5

Author(s):

M. I. Eremets ◽

V. V. Struzhkin ◽

I. A. Trojan

Keyword(s):

High Temperature ◽

Laser Heating ◽

Diamond Anvil Cell ◽

Diamond Anvil

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Phase transitions beyond post-perovskite in NaMgF3 to 160 GPa

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1909446116 ◽

2019 ◽

Vol 116 (39) ◽

pp. 19324-19329 ◽

Cited By ~ 1

Author(s):

Rajkrishna Dutta ◽

Eran Greenberg ◽

Vitali B. Prakapenka ◽

Thomas S. Duffy

Keyword(s):

Phase Transitions ◽

Diamond Anvil Cell ◽

Extrasolar Planets ◽

High Pressures ◽

Model System ◽

Similar Sequence ◽

Deep Interior ◽

Diamond Anvil ◽

Binary Compounds ◽

Pressure Phase

Neighborite, NaMgF3, is used as a model system for understanding phase transitions in ABX3 systems (e.g., MgSiO3) at high pressures. Here we report diamond anvil cell experiments that identify the following phases in NaMgF3 with compression to 162 GPa: NaMgF3 (perovskite) → NaMgF3 (post-perovskite) → NaMgF3 (Sb2S3-type) → NaF (B2-type) + NaMg2F5 (P21/c) → NaF (B2) + MgF2 (cotunnite-type). Our results demonstrate the existence of an Sb2S3-type post-post-perovskite ABX3 phase. We also experimentally demonstrate the formation of the P21/c AB2X5 phase which has been proposed theoretically to be a common high-pressure phase in ABX3 systems. Our study provides an experimental observation of the full sequence of phase transitions from perovskite to post-perovskite to post-post-perovskite followed by 2-stage breakdown to binary compounds. Notably, a similar sequence of transitions is predicted to occur in MgSiO3 at ultrahigh pressures, where it has implications for the mineralogy and dynamics in the deep interior of large, rocky extrasolar planets.

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