Magnetic Characterization

Fig. 12 Structure of the Magnetic Characterization Measurements (SEM Image from Fabrizio Porrati)

About

Author

Jonathan

Date

22 August 2020

All measurements in this Lab Book are taken while an external magnetic field influences the sample.

The following section contains information about the normal magnetic measurements. They are measuring the hysteresis loop of a hard magnet.

Because the nanostructures are coupled systems, a small change in the parameters can lead to a large respnonse of the system.

Project Start

Fig. 13 Start of the Project

Hysteresis Loops

Hysteresis Loop at 90deg

All measuements have been measured at @90deg (Parallel setting for best sensitivity).

Fig. 14 m57: 90deg (Parallel) Hysteresis Loop

Reproduced Hysteresis Loops

Fig. 15 Reproduced Hysteresis Loops.

Parameters

There are a lot of parameters connected to the researched system. In order to find corellations the following parameters have been studied in detail:

Angle

The goal of this section is to study the influence of an external field at different angles.

The following table shows the different angles and the corresponding measurement numbers for the different structures. At Angle ±90deg there is only one measurement as plusses and crosses could be measured simultaneously.

From Filenames

Different Angles

This is a special angle as it is the only one that can be measured with parallel setting.

Fig. 16 m57: Parallel measured 90deg hysteresis loop.

Fig. 17 m56: Hall voltage of external 1 T field sweep.