Paper Title:
Magnetic and Martensitic Transitions in Ni2Mn1+xSn1-x Alloys
  Abstract

The magnetic phase diagram of Ni2Mn1+xSn1−x based ferromagnetic (FM) shape memory alloys for varied concentrations of x have been studied. With increasing concentration of Mn, the FM Curie temperature (TC) decreases, while the martensitic transition temperature (TM) goes higher. For x = 0.44 and 0.48, TM is close to the onset of ferromagnetism, and two distinct magnetic transitions are observed corresponding to the TC’s of the FM phases of martensite and austenite respectively. The isothermal magnetization at 5 K indicates saturating behaviour at high fields and the saturation moment drops linearly with x. The samples show reasonably large negative magnetoresistance around TM, however the magnitude drops with increasing x. The magnetoresistance is found to be highly irreversible with respect to the applied magnetic field and field induced arrested state is observed for all the FM samples studied around the first order martensitic transition. The present investigation clearly indicates complex magnetic ground state of the Ni2Mn1+xSn1−x samples with competing magnetic interactions.

  Info
Periodical
Edited by
V. A. Chernenko and J. M. Barandiaran
Pages
97-102
DOI
10.4028/www.scientific.net/MSF.635.97
Citation
S. Chatterjee, S. Majumdar, "Magnetic and Martensitic Transitions in Ni2Mn1+xSn1-x Alloys", Materials Science Forum, Vol. 635, pp. 97-102, 2010
Online since
December 2009
Export
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Tadeusz Kulik, Jarosław Ferenc, Aleksandra Kolano-Burian, Maciej Kowalczyk
747
Authors: Tsutomu Mashimo, Xu Fan, Xin Sheng Huang
Abstract:Mechanical alloying (MA), super cooling process, etc. have been used to prepare amorphous phases, metastable solid solutions, nanocrystals,...
1937
Authors: Z. Stokłosa, G. Badura, P. Kwapuliński, Józef Rasek, G. Haneczok, Józef Lelątko, Lucjan Pająk
Abstract:The crystallization and optimization of magnetic properties effects in FeXSiB (X=Cu, V, Co, Zr, Nb) amorphous alloys were studied by...
171
Authors: Gang Wang, Wen Ru Zhao, Yan Dong Liu, Chun Yan Wang, Yan Dong Wang, Liang Zuo
Abstract:In recent years, there has been an increasing interest in magnetic shape memory alloys (MSMAs) due to their unique ability to produce very...
2188
Authors: Tomoyuki Kakeshita, Takashi Fukuda, Yong-Hee Lee
Abstract:We have investigated athermal and isothermal martensitic transformations (typical displacive transformations) in Fe–Ni, Fe–Ni–Cr, and...
90