NMR studies of the ground states of Ni50-xCoxMn35In15 (x=1, 2.5) and Ni45Co5Mn37In13 Heusler alloys

Anil Aryal, Igor Dubenko, Sudip Pandey, Jing Han Chen, Saikat Talapatra, Vojtech Chlan, Helena Stepankova, Vladimir Matveev, Mikhail Blinov, Valerii Prudnikov, Alexander Granovsky, Erkki Lähderanta, Shane Stadler, Naushad Ali

Результат исследований: Научные публикации в периодических изданияхстатья

Аннотация

Three temperature-induced phase transitions at T=T1, TM/TA, and TC, related to the ferromagnetic order of the martensitic phase (FMMP), martensitic (structural) transitions (MT), and the ferromagnetic order of the austenitic phase (FMAP), respectively, have been observed in the off-stoichiometric Heusler alloys, Ni50-xCoxMn35In15 (x=1, 2.5) and Ni45Co5Mn37In13. The phase transitions temperatures are found to be depended on alloy composition. A kinetic arrest of the AP was observed for Ni47.5Co2.5Mn35In15 in the magnetization measurements during field-cooling cycle (FCC) at 50 kOe. Depending upon the cooling protocols, ZFC and FCC (at H = 50 kOe), two different ground states of the alloys can be found in Ni47.5Co2.5Mn35In15 and Ni45Co5Mn37In13 alloys. The ground states (T=4.2 K and external field H=0) of the alloys was found to be characterized by three main line: two, partially overlapping, at higher frequencies (300-450 MHz), most likely corresponding of manganese resonance lines and one at lower frequency at about 200 MHz. A significant shift in the spectrum of Ni45Co5Mn37In13 by about 100 MHz to higher frequencies was observed. The correlation of magnetizations obtained from magnetic moment and NMR studies is discussed.

Язык оригиналаанглийский
Номер статьи015328
ЖурналAIP Advances
Том10
Номер выпуска1
DOI
СостояниеОпубликовано - 1 янв 2020

    Fingerprint

Предметные области Scopus

  • Физика и астрономия (все)

Цитировать

Aryal, A., Dubenko, I., Pandey, S., Chen, J. H., Talapatra, S., Chlan, V., ... Ali, N. (2020). NMR studies of the ground states of Ni50-xCoxMn35In15 (x=1, 2.5) and Ni45Co5Mn37In13 Heusler alloys. AIP Advances, 10(1), [015328]. https://doi.org/10.1063/1.5129976