DC Magnetization Studies

Since the RT hysteresis loop shows the clear presence of two overlapping loops, individual loops were fitted using 

In orderto get more insight into the processes taking place at the interfaces during slow annealing and their influence on the corresponding magnetic properties, in situ M-H measurements were done at different intervals of temperature. 

TABLE 21.6 Experimental and Fitted Parameters of As-Deposited and at High-Temperature M-H Loops [53]  

Hysteresis loops of as-deposited Fe/AI MLS at different temperatures. (Reprinted with permission from Ref. 53. Copyright (2008) by the American Institute of Physics.) 

Evolution of both loops for M-H curves at higher temperatures shows that, in general, of the nonsquare loop becomes 

---

Magnetic studies show that the above compound is paramagnetic in nature in the temperature range 5-300 K. The magnetic susceptibility (xm) along with (Xm) vs T plots (1 Tesla) obtained from a DC-magnetization study of the powdered... 

Watson JHP, Cressey BA, Roberts AP, Ellwood DC, Chamock JM, Soper AK (2000) Structural and magnetic studies on heavy-metal-adsorbing iron sulphide nanoparticles prodnced by sulphate-redncing bacteria. J Magnet Magnetic Mater 214 13-30... 

Beaulieu C, de Crespigny A, Tong DC, Moseley ME, Alhers GW, Marks MP. Longitudinal magnetic resonance imaging study of perfusion and diffusion in stroke evolution of lesion volume and correlation with clinical outcome. Arm Neurol 1999 46 568-578. 

An ESRI system can be built with small modifications of commercial spectrometers by, for example, gradient coils fixed on the poles of the spectrometer magnet, regulated direct current (DC) power supplies, and required computer connections [40,53,55]. Gradients can be applied in the three spatial dimensions, and a spectral dimension can be added by the method of stepped gradients. The spectral dimension is important when the spatial variation of ESR line shapes (as a function of sample depth) is of interest this situation will be described below, in the ESRI studies of heterophasic polymers. In most systems, the software for image reconstruction in ESRI experiments must be developed in-house. 

---