Atomic topology of highly mobile Type I and supermobile Type II twin boundaries in 10M Ni–Mn–Ga single crystal

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F25%3A00639518" target="_blank" >RIV/61388998:_____/25:00639518 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/25:00639518

Výsledek na webu

<a href="https://hdl.handle.net/11104/0369942" target="_blank" >https://hdl.handle.net/11104/0369942</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.scriptamat.2025.116920" target="_blank" >10.1016/j.scriptamat.2025.116920</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Atomic topology of highly mobile Type I and supermobile Type II twin boundaries in 10M Ni–Mn–Ga single crystal

Popis výsledku v původním jazyce

The atomic topology of individual, highly mobile Type I and Type II twin boundaries in 10M Ni–Mn–Ga martensite was investigated by transmission electron microscopy (TEM). The twin boundaries established in a bulk single crystal showed twinning stresses of ∼1 MPa for Type I and ∼0.1 MPa for Type II. TEM lamellae with a (010) cross-section and the c-axis (easy-magnetization direction) lying in-plane were prepared by focused ion-beam milling, each containing a single twin boundary of specific type. High-resolution TEM confirmed an atomically sharp Type I twin boundary oriented along the rational (101) plane. The Type II boundary was also atomically sharp, apart from occasional single-atomic-plane steps, contrasting with previous suggestions of its diffuse nature. These findings provide the first direct atomic-scale comparison of both boundary types and offer critical structural insight into the origin of supermobility in Type II twin boundaries.

Název v anglickém jazyce

Atomic topology of highly mobile Type I and supermobile Type II twin boundaries in 10M Ni–Mn–Ga single crystal

Popis výsledku anglicky

The atomic topology of individual, highly mobile Type I and Type II twin boundaries in 10M Ni–Mn–Ga martensite was investigated by transmission electron microscopy (TEM). The twin boundaries established in a bulk single crystal showed twinning stresses of ∼1 MPa for Type I and ∼0.1 MPa for Type II. TEM lamellae with a (010) cross-section and the c-axis (easy-magnetization direction) lying in-plane were prepared by focused ion-beam milling, each containing a single twin boundary of specific type. High-resolution TEM confirmed an atomically sharp Type I twin boundary oriented along the rational (101) plane. The Type II boundary was also atomically sharp, apart from occasional single-atomic-plane steps, contrasting with previous suggestions of its diffuse nature. These findings provide the first direct atomic-scale comparison of both boundary types and offer critical structural insight into the origin of supermobility in Type II twin boundaries.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Scripta Materialia

ISSN

1359-6462

e-ISSN

1872-8456

Svazek periodika

269

Číslo periodika v rámci svazku

Dec

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

5

Strana od-do

116920

Kód UT WoS článku

001585626900001

EID výsledku v databázi Scopus

2-s2.0-105012928600