Hello researchers,
I have prepared a Ni50Mn40Sn10 (atomic %) alloy by Arc melting technique. The obtained alloy was subjected to vacuum heat treatment at 950 degree celcius for 72 hrs followed by ice water quenching. Room temperature XRD confirms the orthorhombic phase of martensite. Room temperature microstructural study shows the formation of martensitic needles confirming the martensitic phase transformation. Phase transformation temperatures were determined by DSC and found as (As = 185°C, Af = 197 °C, Ms = 190 °C, Mf = 178 °C). MH curve was taken at 5K and 300K temperature and a MT curve from 5K to 300K was also recorded. These are attached below:
Kindly let me know what type of magnetic behavior is there at 5K and 300K by looking at MH curve.
What does MT curve indicates and how it is correlated with MH.
In magnetic property measurement there are two types: M-H and M-T
In simply. At 5 K, you have ferromagnetism, because it makes hysteresis loop.
At 300 K, you have paramagnetism (no hysteresis).
What is the relation with your M-T?
So you measure M-T from 5 to 300K with H = 0.5 T,
In M-H, so you measure only at one point, at 5 K and at 300 K for different H (-5 to 5 T).
M-T shows you the point measurements at different temperature.
By seeing only M-T, you can see the tendency of your sample, but we need support by M-H at certain temperature.
It is better you learn the definition some point temperature in magnetic property, like Curie Temperature, Neel Temperature, etc. So you will know what is Tp that you write.
Hope this can help.
Good to be read.
https://www.qdusa.com/sitedocs/appNotes/mpms/FundPrimer.pdf
http://www.mdpi.com/1422-0067/14/8/15977/htm
Dear Saini,
I coincide in general with Dr. Budiman observations. However, the M Vs T curve is typical of systems with magnetic clusters. The Tp temperature seems to be the blocking temperature, TB. As the peak is also unique, the TB value must be related with the size of the clusters.
The hysteresis M Vs H curve has been obtained in a "virgin" sample? In any way, the coercitive field is low, so the ferromagnetic component must be weak.
Best regards
Pedro
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