I Questions about Curie Temperature Characteristics

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The Curie temperature of ferromagnetic materials is primarily determined by the strong magnetic interactions between atoms and is generally considered a constant for a given material. However, external factors, such as a strong magnetic field, can influence the alignment of atomic spins, potentially raising the Curie temperature qualitatively. While environmental conditions have minimal impact, the presence of a strong magnetic field can enhance atomic order, affecting the material's magnetic properties. This interaction suggests that while the Curie temperature is stable, it can exhibit variations under specific conditions. Understanding these dynamics is essential for applications in magnetism and material science.
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Is the curie temperature of a ferromagnetic material constant? Are there any factors that will raise it or lower it? For instance, what happens if my piece of iron is already in a strong magnetic field? Is the curie temperate higher, then?
 
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I am a layman of magnetism. Curie temperature comes from strong magnetic interaction between atoms so the environment condition has less effects on it, I assume. However strong magnetic field in environment would help atoms to have orders and raise Curie temperature at least qualitatively.
 
A relative asked me about the following article: Experimental observation of a time rondeau crystal https://www.nature.com/articles/s41567-025-03028-y I pointed my relative to following article: Scientists Discovered a Time Crystal That Reveals a New Way to Order Time https://www.yahoo.com/news/articles/scientists-discovered-time-crystal-reveals-180055389.html This area is outside of my regular experience. I'm interested in radiation effects in polycrystalline material, i.e., grain...

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