0
What happen to iron bearing minerals that are heated at curie point?
Wiki User
∙ 13y ago
Iron-bearing minerals lose their magnetic properties when they are heated to the Curie point.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
What techique is used to study ancient magnetic fields?
Paleomagnetism refers to the study of the record of the Earth's magnetic field preserved in various rocks and minerals through time.The study of paleomagnetism is possible because iron-bearing minerals such as magnetite may record past directions of the Earth's magnetic field when the rocks containing them were formed or last heated up.Paleomagnetic signatures in rocks can be recorded by three different mechanisms:-First, iron-titanium oxide minerals in basalt and other igneous rocks may preserve the direction of the Earth's magnetic field when the rocks cool through the "Curie temperature" for those minerals. (The Curie temperature of magnetite, is about 580°C).In a completely different process, magnetic grains in sediments may align with the magnetic field during or soon after deposition.In a third process, magnetic grains may be deposited from a circulating solution, or be formed during chemical reactions, and may record the direction of the magnetic field at the time of the mineral's formation.
Are gasses magnetic?
There re no magnetic gasses. Even Iron when in a gaseous state is not magnetic because it has to be heated above the Curie temperature to become a gas.
Does heating up a magnet make it stronger?
Heating up a magnet actually makes it weaker. A magnet can be completely demagnetized when heated past it's Curie temperature.
What element is radioactive and discovered by the Curies?
Polonium was discovered by Marie Curie and Pierre Curie in 1898. Radium was discovered by Marie Curie, Pierre Curie and G. Bemont also in 1898. Studying residues of uranium ores Marie Curie and Pierre Curie found that these residues are more radioactive than uranium; they attributed this radioactivity to unknown elements. They isolated these elements and named these elements polonium and radium.
If a magnet bar were heated would it change its magnetic field?
Initially, no. At a certain temperature the bar would suddenly lose its magnetism. This temperature is known as the Curie point of the material. If the magnetism of the bar came from an external source - a solenoid or a permanent magnet - the field would return to its original strength as soon as the bar cooled below the Curie point. If the bar had been itself a permanent magnet almost all the field would stay gone until the bar was re-magnetised by an external field.
When rocks are heated above a specific temperature called they loose there magnetism?
This is known as the Curie Temperature. One of the things Mr. Pierre Curie is known for rather than his more famouse wife.
What happens when a ferromagnetic substance is heated to high temperature?
At a specific high temperature, called Curie point, the ferromagnetism disappear.
What techique is used to study ancient magnetic fields?
Paleomagnetism refers to the study of the record of the Earth's magnetic field preserved in various rocks and minerals through time.The study of paleomagnetism is possible because iron-bearing minerals such as magnetite may record past directions of the Earth's magnetic field when the rocks containing them were formed or last heated up.Paleomagnetic signatures in rocks can be recorded by three different mechanisms:-First, iron-titanium oxide minerals in basalt and other igneous rocks may preserve the direction of the Earth's magnetic field when the rocks cool through the "Curie temperature" for those minerals. (The Curie temperature of magnetite, is about 580°C).In a completely different process, magnetic grains in sediments may align with the magnetic field during or soon after deposition.In a third process, magnetic grains may be deposited from a circulating solution, or be formed during chemical reactions, and may record the direction of the magnetic field at the time of the mineral's formation.
What would happen if Marie Curie didnt discover polonium and radium?
Nothing so important.
Are gasses magnetic?
There re no magnetic gasses. Even Iron when in a gaseous state is not magnetic because it has to be heated above the Curie temperature to become a gas.
What tools did Marie currie use?
Marie Curie used an invention called the electron.She also used a method that separated different elements in a substance made of 30 minerals called blende to find radium.
Where was radium found on earth?
Radium exist in very small concentrations in uranium ores. It was first discovered in uranium minerals from Joachimsthal, North Bohemia (now Jachymov in the Czech Republic) by Marie Curie, Pierre Curie and Gustave Bemont (1898).
Does heating up a magnet make it stronger?
Heating up a magnet actually makes it weaker. A magnet can be completely demagnetized when heated past it's Curie temperature.
What are Irene Curie's parents names?
Marie Curie and Pierre Curie was Irene Curie's parents.
How heating demagnetises a magnet.?
A magnet works because the atoms of a magnet are all aligned in only a single uniform direction, in most cases due to the direction of north to south.Heating a magnet causes the alignment to be disturbed and be misaligned, thus losing its magnetic power.The temperature at which a heated magnet loses its magnetism is called the Curie Point named after Pierre Curie husband of Marie Curie.
Who was Marie Curie Maried to?
Pierre Curie
Who is eve and Irene curie?
Eve Denise Curie Labouisee was a French-American author and writer. Another Eve Curie was the daughter of Marie Curie.
