CAJ | 학술논문

磁驱动相变材料利用外磁控制下铁弹马氏体变体重排或磁诱导一级相变产生的形状记忆效应来捕获应变，兼具铁弹形状记忆与磁致伸缩功效特征。Heusler型Ni—Mn．X（X=Ga或In）系磁驱动相变合金材料具有磁感生应变大、能量密度高、反应速度快等优点，是未来重要磁传感器和磁驱动器研制的关键。主要介绍了国内外Ni-Mn-Ga、Ni-Co-Mn-In、反铁磁体等磁驱动相变材料的研究进展，以及本课题组利用高能Xx射线衍射和中子散射技术对磁驱动相变材料的原位研究。最后，展望了磁驱动相变合金材料的发展趋势。
자구동상변재료이용외자공제하철탄마씨체변체중배혹자유도일급상변산생적형상기억효응래포획응변，겸구철탄형상기억여자치신축공효특정。Heusler형Ni—Mn．X（X=Ga혹In）계자구동상변합금재료구유자감생응변대、능량밀도고、반응속도쾌등우점，시미래중요자전감기화자구동기연제적관건。주요개소료국내외Ni-Mn-Ga、Ni-Co-Mn-In、반철자체등자구동상변재료적연구진전，이급본과제조이용고능Xx사선연사화중자산사기술대자구동상변재료적원위연구。최후，전망료자구동상변합금재료적발전추세。
Magnetic field-driven phase transformation material is a class of smart material which combines the functional behaviors of ferroelastic shape memory and magnetostriction. The large magnetic field-induced strain obtained in magnetic field-driven phase transformation materials can be achieved through two mechanisms, which include reorientation of mar- tensitic variants caused by the magnetic field-induced twin boundary motion and shape memory effect via magnetic field-in- duced first order phase transformation. Heusler-type Ni-Mn-X（X = Ga or In） magnetic field-driven phase transformation alloys are potential candidates for magnetic sensors and actuators, owing to their large magnetic field-induced strain, high energy density and rapid response and so on. The research progresses of magnetic field-driven phase transformation materi- als, including Ni-Mn-Ga alloys, Ni-Co-Mn-In alloys and antiferromagnets, are summarized. And recent researches from our group are introduced, which are focused on in-situ studies of magnetic field-driven phase transformation materials using high-energy x-ray diffraction and neutron scattering techniques. At last, future trends of magnetic field-driven phase trans- formation alloy are prospected.