Publication

AC-measurements of specific heat in BCPO

2010
Student Projects

Abstract

This report is the summary of what has been done for my TP4 project in second semester at "laboratory of quantum magnetism (LQM)" under the supervision Prof.H.Ronnow. This project is the continuation of first semester regarding to measurement of specific heat of BCPO. The subject is to measure and compare the specific heat of two samples, BiCu2PO6 and BiZn2PO6 under applying pressure. This comparison leads to understanding the change in magnetic structure of BCPO, which has Spin-Gap, after replacing its Cu ion with non-magnet element Zn. Zn has no magnetic momentum, so its specific heat behavior is a good approximation of phonon interaction part of BCPO, and by subtracting this part, we can find the magnetic behavior of BCPO.

Official source

https://infoscience.epfl.ch/entities/publication/24cddf2c-693e-4871-b7e7-0cf9026373bd

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2010
Student Projects

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/24cddf2c-693e-4871-b7e7-0cf9026373bd

About this result

Related concepts (32)

Magnetic moment

In electromagnetism, the magnetic moment is the magnetic strength and orientation of a magnet or other object that produces a magnetic field. Examples of objects that have magnetic moments include loops of electric current (such as electromagnets), permanent magnets, elementary particles (such as electrons), composite particles (such as protons and neutrons), various molecules, and many astronomical objects (such as many planets, some moons, stars, etc).

Magnetic domain

A magnetic domain is a region within a magnetic material in which the magnetization is in a uniform direction. This means that the individual magnetic moments of the atoms are aligned with one another and they point in the same direction. When cooled below a temperature called the Curie temperature, the magnetization of a piece of ferromagnetic material spontaneously divides into many small regions called magnetic domains. The magnetization within each domain points in a uniform direction, but the magnetization of different domains may point in different directions.

Magnetism

Magnetism is the class of physical attributes that occur through a magnetic field, which allows objects to attract or repel each other. Because both electric currents and magnetic moments of elementary particles give rise to a magnetic field, magnetism is one of two aspects of electromagnetism. The most familiar effects occur in ferromagnetic materials, which are strongly attracted by magnetic fields and can be magnetized to become permanent magnets, producing magnetic fields themselves.

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AC-measurements of specific heat in BCPO

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