Magnetic transition of ferromagnetic material at high pressure using a novel system

Abstract

Tian-Li(胡天立) a) , Wang Xin(王 鑫) a) , Han Bing(韩 冰) a) † , Li Yan(李 岩) a)b) , Huang Feng-Xian(黄凤仙) a)b) , Zhou Qiang(周 强) a)b) , and Zhang Tao(张 涛) a) ‡

Ferromagnetic materials under high pressure in a diamond-anvil cell: A magnetic study

“…[2][3][4] The research into the magnetic properties of materials using DACs is generally based on the inductive method to measure alternating current (AC) susceptibility, while some laboratories have developed various techniques and built diverse systems. [5][6][7][8][9][10][11] We have built a system to measure the magnetic transition of ferromagnetic materials. Our previous experiments obtained the variation curves of the magnetic susceptibility of iron, and the α → ε phase transition of iron at room temperature is verified.…”

“…Our previous experiments obtained the variation curves of the magnetic susceptibility of iron, and the α → ε phase transition of iron at room temperature is verified. [11] Ferromagnetic materials have unique magnetic properties that not only show a high susceptibility but also display hysteresis under an external applied magnetic field. As a typical ferromagnetic material, iron has at least six phases at high pressure and temperature, [12] and there are two stable phases at room temperature: α-iron (bcc) and ε-iron (hcp).…”