磁鐵磁(ci)(ci)性(xing)(xing)(xing),這(zhe)是需(xu)要(yao)從(cong)微觀(guan)(guan)世界(jie)來(lai)分析。本質上(shang)是磁(ci)(ci)鐵內部的微觀(guan)(guan)單元磁(ci)(ci)極方向保持一致(zhi)形成(cheng)的,磁(ci)(ci)極的一致(zhi)性(xing)(xing)(xing)就(jiu)形成(cheng)了穩定的磁(ci)(ci)場,理論上(shang)只要(yao)這(zhe)種一致(zhi)性(xing)(xing)(xing)一直保持下(xia)去,磁(ci)(ci)性(xing)(xing)(xing)就(jiu)不會消(xiao)失。可(ke)以看出,磁(ci)(ci)鐵的磁(ci)(ci)性(xing)(xing)(xing)是固有的,是內在屬性(xing)(xing)(xing),與外界(jie)沒有什么(me)關系,當然(ran)也(ye)不會因(yin)為做功(gong)減弱甚(shen)至消(xiao)失。磁(ci)(ci)鐵如果沒有了磁(ci)(ci)性(xing)(xing)(xing),只能說明(ming)一點:磁(ci)(ci)疇磁(ci)(ci)極的有序性(xing)(xing)(xing)被打破了,沒有其(qi)他原因(yin)。