English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

We carried out magneto-optical Kerr effect (MOKE) and magnetizationmeasurements on a single crystal of Ni2.00Mn1.16Ga0.84 in a longitudinalgeometry. While there had been reports of polar geometry measurements so far,we show that - against earlier predictions - surface magnetic states of themartensite and the austenite can be also probed efficiently via longitudinalMOKE. A single variant magnetic state, which occurs at room temperature, ischaracterized by ferromagnetic hysteresis loops similar to standardferromagnets. Temperature dependencies of Kerr rotation were found to belinearly proportional to magnetization for martensitic phases. After passingthrough an inter martensitic structural transition at around 260 K in zeromagnetic field, the coercive fields are more than doubled in comparison withthe room temperature values. On the other hand, at higher temperatures above338 K where an austenite structure is formed, the MOKE signals are dominated byquadratic contributions and the magnitude of Kerr rotation drops due to changesin the electronic and magnetic domains structure. After the sample is cooledacross the austenite-martensite transition again, we observed a multiple beamreflected by the sample due to different types of structural domains present onits surface.

Magneto-optical Kerr effect of a Ni_{2.00}Mn_{1.16}Ga_{0.84} single crystal across austenite and intermartensite transitions