Short answers, pulled from the story.
French chemist Paul Émile Lecoq de Boisbaudran discovered dysprosium in 1886 while working in Paris. He successfully separated the element from holmium oxide after more than thirty attempts using acid dissolution and ammonia precipitation.
Dysprosium possesses the highest magnetic strength among all elements when temperatures drop below zero degrees Celsius. Below its Curie temperature, the metal exhibits simple ferromagnetic ordering with atomic moments aligned in parallel layers before shifting to a helical antiferromagnetic state.
The metal reacts slowly with cold water to form hydroxide gas but releases hydrogen bubbles vigorously when exposed to hot water. Dysprosium dissolves in dilute sulfuric acid to yield yellow ions existing as complex structures within the liquid.
Naturally occurring dysprosium consists of seven isotopes ranging from mass 156 to 164 with 164Dy being the most abundant at 28 percent. These isotopes are considered stable though only the last two are theoretically immune to decay processes like alpha emission.
Worldwide production reached approximately 3100 tonnes in 2021 with China contributing 40 percent and Myanmar adding another 31 percent. Most current supply comes from ion-adsorption clay ores found in southern regions of China while Australia hosts nascent extraction industries including the Browns Range Project pilot plant located 160 kilometers southeast of Halls Creek.