Extraordinary magnetic and structural properties of the off-stoichiometric and the Co-doped Ni2MnGa Heusler alloys under high pressure

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00435763" target="_blank" >RIV/68378271:_____/14:00435763 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.actamat.2014.06.011" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2014.06.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2014.06.011" target="_blank" >10.1016/j.actamat.2014.06.011</a>

Result language

angličtina

Original language name

Extraordinary magnetic and structural properties of the off-stoichiometric and the Co-doped Ni2MnGa Heusler alloys under high pressure

Original language description

To show and to describe a contrast between the magnetic and structural properties of the stoichiometric Ni2MnGa alloy and the off-stoichiometric and the Co-doped Ni?Mn?Ga alloys, we report the effect of high hydrostatic pressure (up to 1.2 GPa) on magnetization and the critical temperatures of structural and magnetic transitions in the off-stoichiometric Ni50xMn25+x+yGa25y and the Co-doped Ni50xCoxMn25+yGa25y Heusler alloys. A huge decrease in their saturation magnetization MM(5 K) under pressure was observed with an extreme value of pressure parameter d ln MM(5 K)/dP = 56 103 GPa1 in the case of the Ni39Co11Mn34Ga16 alloy. The Curie temperature TCA increases under pressure in all the studied alloys. Almost identical values of dTCA/dP = +4.7 +5.9 K GPa1 point to a normalized steepness of a dependence of exchange interactions on interatomic distances.

Czech name

—

Czech description

—

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

—

Project

<a href="/en/project/GAP204%2F12%2F0692" target="_blank" >GAP204/12/0692: Magnetic poly-functional materials ? new access of theory and experiment</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

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

Name of the periodical

Acta Materialia

ISSN

1359-6454

e-ISSN

—

Volume of the periodical

77

Issue of the periodical within the volume

Sep

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

60-67

UT code for WoS article

000340303200006

EID of the result in the Scopus database

—