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- W2245794006 abstract "Ni1-xMnx alloys have been extensively investigated so far, mainly because of their unusual physical properties [1]. Most obvious and common behavior of Ni1-xMnx alloy is the sequence of magnetic phase transitions from paramagnetic at higher temperature, to ferromagnetic-like at intermediate temperatures and spin-glass-like properties with decreasing temperature. These behaviors are believed to originate from the competing interactions between ferromagnetic Ni–Ni, Ni–Mn and antiferromagnetic Mn–Mn pairs. Some similar work has been shown that the magnetic states and the electrical properties are significantly changed, especially at low temperatures, by the addition of a few atomic per cent of nonmagnetic Ti impurities to NiMn alloy. Magnetic measurements have been carried out for both Ni72Mn27Ti1 and Ni72Mn25Ti3 sample by using vibrating sample magnetometer (VSM). As can be seen from Fig.1, the value of magnetization sharply increases with the external magnetic field strength at low field region and, however, it can not reach a saturation state yet in the presence of a relatively strong magnetic field of even 5 kOe. The high field side of the curves are almost lineer with the external field. The measured value of saturation magnetization decreases with increasing temperature as well. The non-saturated magnetization suggests the existence of strong antiferromagnetic inter-cluster interactions mixed with ferromagnetic interactions inside the clusters [2,3,4]. By increasing the applied field, the ferromagnetic part tends to saturate, whereas the antiferromagnetic part increases linearly. Fig. 2 displays the M-T curves of the sample at the applied field of 100 Oe, respectively. It is found that for the ZFC curve start to increase at critical temperature of 90 K showing a phase transition. Then with decreasing temperature, exhibits a maximum at around 16K and start to decrease below this temperature. The decrease in magnetization below this temperature may indicate that there are strong antiferromagnetic inter-cluster interactions between the particles [2,4,5]." @default.
- W2245794006 created "2016-06-24" @default.
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- W2245794006 date "2015-01-30" @default.
- W2245794006 modified "2023-09-27" @default.
- W2245794006 title "MAGNETIC MEASUREMENTS OF Ni72Mn27Ti1 AND Ni72Mn25Ti3 ALLOYS" @default.
- W2245794006 doi "https://doi.org/10.18596/jotcsa.59642" @default.
- W2245794006 hasPublicationYear "2015" @default.
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