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関連する概念動画

Determination of Crystal Structures01:29

Determination of Crystal Structures

In the late 1800s, the revelation that light extended beyond visible wavelengths led to the discovery of X-rays by Wilhelm Roentgen. Recognized as high-energy electromagnetic radiation with short wavelengths, X-rays prompted exploration into their interaction with crystals. Max von Laue proposed in 1912 that the periodic arrangement of atoms, ions, or molecules in crystals would cause them to diffract X-rays, a hypothesis confirmed through experiments with copper sulfate and zinc sulfide...
X-ray Crystallography02:18

X-ray Crystallography

The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...
Metallic Solids02:37

Metallic Solids

Metallic solids such as crystals of copper, aluminum, and iron are formed by metal atoms. The structure of metallic crystals is often described as a uniform distribution of atomic nuclei within a “sea” of delocalized electrons. The atoms within such a metallic solid are held together by a unique force known as metallic bonding that gives rise to many useful and varied bulk properties.
All metallic solids exhibit high thermal and electrical conductivity, metallic luster, and malleability. Many...
Imperfections in Crystal Structure: Stoichiometric Point Defects01:26

Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...

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関連する実験動画

Updated: Jul 12, 2026

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
09:06

Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

Published on: March 24, 2019

電子顕微鏡と層層の超伝導性インターカレーション複合体の difraktion.

H Fernández-Morán, M Ohstuki, A Hibino

    Science (New York, N.Y.)
    |October 29, 1971
    PubMed
    まとめ

    高解像度電子顕微鏡では,層層の移行金属二カルコゲニドのインターキャレーション複合体におけるユニークな超伝導性特性を明らかにしました. これらの発見は,それらの結晶構造と不完全さの既存のモデルを確認し,拡張します.

    科学分野:

    • マテリアルサイエンス 材料科学
    • 凝縮物質物理学 凝縮物質物理学
    • 固体化学 固体化学

    背景:

    • 層状の移行金属二カルコゲニドは,ユニークな電子特性で知られています.
    • インターケレーション複合体は,超伝導性を含む調節可能な特性を提供します.
    • 彼らの構造を理解することは,超伝導性能を最適化するための鍵です.

    研究 の 目的:

    • 超伝導移行金属二カルコゲニドのインターキャレーション複合体の結晶格子と不完全性を調査する.
    • 先進的な顕微鏡技術を使用して,構造的な詳細を直接可視化します.
    • 高解像度の構造データを,既存の化学および difraktion 情報と相関させる.

    主な方法:

    • 高解像度電子顕微鏡 (HREM) とは
    • 電子 difrraction 分析 電子 difrraction 分析 電子 difrraction 分析 電子 difrraction 分析 電子 difrraction 分析 電子 difrraction 分析 電子 difrraction 分析 電子 difrraction 分析 電子 difrraction 分析
    • X線 difraksionと化学データとの相関関係

    主要な成果:

    • 結晶格子と格子不完全性の直接視覚化が達成されました.

    さらに関連する動画

    Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
    10:36

    Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

    Published on: January 21, 2016

    Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
    09:13

    Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction

    Published on: April 1, 2017

    関連する実験動画

    Last Updated: Jul 12, 2026

    Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
    09:06

    Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope

    Published on: March 24, 2019

    Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
    10:36

    Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials

    Published on: January 21, 2016

    Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
    09:13

    Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction

    Published on: April 1, 2017

  • 独特の超伝導特性が観察され,構造的特徴と関連付けられました.
  • 詳細な構造情報が得られ,ナノスケールの特徴が解明されました.

    • 結論:

    • この研究は,これらの超伝導材料の振る舞いの直接的な構造的証拠を提供します.
    • 発見は,以前に仮定された構造モデルを確認し,拡張しています.
    • 高解像度電子顕微鏡は,複雑な層状の材料を特徴付けるための強力なツールです.