Structural Characterization of Magnetic Nano-particles Suspensions, Using Magnetic Measurements

TL;DR

This paper explores the use of P curves derived from magnetic measurements to characterize the structure of magnetic nano-particles suspensions, providing an alternative to micrography and hysteresis analysis.

Contribution

It introduces a detailed methodology for using P curves in structural analysis of magnetic nano-particles suspensions and discusses their limitations.

Findings

P curves can effectively characterize magnetic structures.

Numerical analysis of magnetization curves offers structural insights.

Limitations exist in the application of P curves.

Abstract

The paper describes some characteristics of the "P" curves for structural characterization of magnetic nano-particles suspensions (complex fluids, complex powders, complex composite materials, or living biological materials having magnetic properties). In the case of these materials, the magnetic properties are conferred to various carrier liquids by artificially integrating in their structure ferromagnetic particles of different sizes. The magnetic properties are usually shown by the hysteresis curve. The structure can be seen on (electronic) micrography. The P curves offer another possibility to determine the structure of the magnetic component of a complex fluid by numerical analysis of the magnetization curve experimentally obtained. The paper presents a detailed approach of the P curves and some limitations in their use.