The role of adaptive martensite in magnetic shape memory alloys

R Niemann, UK Rößler, ME Gruner… - Advanced …, 2012 - Wiley Online Library
Magnetic shape memory materials require a high twin boundary mobility and low hysteresis
for applications mainly as actuators, sensors, and magnetocaloric cooling elements. Usually …

Commensurate and incommensurate “5M” modulated crystal structures in Ni–Mn–Ga martensitic phases

L Righi, F Albertini, L Pareti, A Paoluzi, G Calestani - Acta Materialia, 2007 - Elsevier
It is well known that the composition of ferromagnetic shape memory Ni–Mn–Ga Heusler
alloys determines both temperature of martensitic transformations and the structure type of …

Crystal structure of 7M modulated Ni–Mn–Ga martensitic phase

L Righi, F Albertini, E Villa, A Paoluzi, G Calestani… - Acta Materialia, 2008 - Elsevier
For the first time, the 7M modulated structure, frequently observed in ferromagnetic shape
memory Ni–Mn–Ga martensitic phases, is solved by powder diffraction analysis. Two …

Ni-Mn-Ga micro-trusses via sintering of 3D-printed inks containing elemental powders

SL Taylor, RN Shah, DC Dunand - Acta Materialia, 2018 - Elsevier
Abstract Ni-Mn-Ga magnetic shape memory alloy (SMA) micro-trusses, suitable for high
magnetic field induced strains and/or a large magnetocaloric effect, are created via a new …

Experimental Observations versus First‐Principles Calculations for Ni–Mn–Ga Ferromagnetic Shape Memory Alloys: A Review

H Seiner, M Zelený, P Sedlák, L Straka… - physica status solidi …, 2022 - Wiley Online Library
This review summarizes recent advances in first‐principles simulations of the structural,
mechanical, and magnetomechanical properties of Ni–Mn–Ga‐based ferromagnetic shape …

Building hierarchical martensite

S Schwabe, R Niemann, A Backen… - Advanced Functional …, 2021 - Wiley Online Library
Martensitic materials show a complex, hierarchical microstructure containing structural
domains separated by various types of twin boundaries. Several concepts exist to describe …

Extended investigation of intermartensitic transitions in Ni-Mn-Ga magnetic shape memory alloys: A detailed phase diagram determination

A Çakιr, L Righi, F Albertini, M Acet, M Farle… - Journal of Applied …, 2013 - pubs.aip.org
Martensitic transitions in shape memory Ni-Mn-Ga Heusler alloys take place between a high
temperature austenite and a low temperature martensite phase. However, intermartensitic …

Intermartensitic transitions and phase stability in Ni50Mn50− xSnx Heusler alloys

A Çakır, L Righi, F Albertini, M Acet, M Farle - Acta Materialia, 2015 - Elsevier
Abstract Ni–Mn based Heusler alloys are of considerable interest due to their multifunctional
properties such as magnetic shape memory, magnetocaloric effect and spintronics. The …

Premartensite to martensite transition and its implications for the origin of modulation in ferromagnetic shape-memory alloy

S Singh, J Bednarcik, SR Barman, C Felser, D Pandey - Physical Review B, 2015 - APS
We present results of a temperature-dependent high-resolution synchrotron x-ray powder
diffraction study of sequence of phase transitions in N i 2 MnGa. Our results show that the …

Complex magnetic ordering as a driving mechanism of multifunctional properties of Heusler alloys from first principles

P Entel, M Siewert, ME Gruner, HC Herper… - The European Physical …, 2013 - Springer
First-principles calculations are used to study the structural, electronic and magnetic
properties of (Pd, Pt)-Mn-Ni-(Ga, In, Sn, Sb) alloys, which display multifunctional properties …