Assertion: magnetite | /r/HasProperty | fe 3 o
Facets:
Source sentences:
text: Microscopic examination of lodestones has found them to be made of magnetite (Fe 3 O 4 ) with inclusions of maghemite (cubic Fe 2 O 3 ), often with impurity metal ions of titanium, aluminium, and manganese.
text: Thousands of years ago, large deposits of magnetic oxides were found in the district of Magnesia in Asia Minor; their location led to the mineral receiving the name of magnetite (Fe 3 O 4 ), which was nicknamed lodestone.
text: Cobalt oxides are antiferromagnetic at low temperature: CoO (Néel temperature 291 K) and Co 3 O 4 (Néel temperature: 40 K), which is analogous to magnetite (Fe 3 O 4 ), with a mixture of +2 and +3 oxidation states.
text: Next, coatings using magnetite (Fe 3 O 4 ) such as TDK's Audua were produced in an attempt to approach or exceed the sound quality of vinyl records.
text: Permanent magnets are made out of substances like magnetite (Fe 3 O 4 ), the most magnetic naturally occurring mineral, or neodymium, a powerfully magnetic synthetic substance.
text: Some minerals such as magnetite (Fe 3 O 4 ) are obviously magnetic.
text: The most interesting ferrite is magnetite, Fe 3 O 4 .
text: Gregor analyzed the sand, finding it was largely magnetite (Fe 3 O 4 ) and the rather impure oxide of a new metal, which he described as ‘reddish brown calx.