张亚九讲师

教育经历：

博士，北京科技大学，2015-2018；中国科学院物理研究所联合培养 2014-2018

硕士，北京科技大学，2013-2015

学士，北京科技大学，2009-2013

研究方向：

主要从事新型磁性功能材料的探索与研究，包括磁相变智能材料和磁电子学材料。借助第一性原理、微磁模拟等理论计算方法，多晶制备、单晶生长等实验手段，在Heusler合金、六角合金等材料体系中，研究磁场驱动马氏体相变、高自旋极化半金属性、全补偿磁结构、非共线磁结构、磁性拓扑输运、反常霍尔效应、拓扑霍尔效应、磁性斯格明子、自旋玻璃、磁交换偏置等物理行为，以及磁性相变与结构相变的耦合，共价杂化与磁性的竞争，温度、磁场、等静压条件下的磁相变及电输运等物理行为。

1.新型磁相变材料的开发及物性研究

磁相变智能材料的研究以适合航天、海洋、精密机械和智能器件的磁性材料为主要对象，以合金的基本磁性和功能特性为主要研究内容，包括电子结构的计算和实验验证，新型磁相变材料设计，以及结构和物性的表征。同时包括其他拓展研究，如磁电阻，磁熵变，交换偏置以及霍尔效应等。

2.新型磁电子学材料探索及表征

通过第一性原理计算方法研究Heusler合金的能带结构和磁结构，设计并预测具有新型单自旋半金属性质以及全补偿亚铁磁性的材料，并通过多晶制备、单晶生长、结构表征、物性测量等实验手段验证其物理性质。以具有Kagome六角结构的合金材料为基础，设计并构建磁阻挫、非共线等特殊磁结构，开发具有反常霍尔效应、拓扑霍尔效应、磁拓扑性质、磁性斯格明子、自旋玻璃、磁交换偏置等物理行为的新材料体系。

科研项目情况：

国家自然科学基金面上项目，51671024，“非共线磁结构Heusler合金的设计以及磁性和磁输运性质的研究”，2017~至今，项目重要参与人。

代表性论文:

[1] Yajiu Zhang, Qingqi Zeng, Zhiyang Wei, Zhipeng Hou, Zhuhong Liu, Enke Liu, Xuekui Xi, Wenhong Wang, Xingqiao Ma, Guangheng Wu. Cluster spin glass state caused by antiphase boundaries in NiFeGa alloys. Journal of Alloys and Compounds. 2018, 749: 134-139. (SCI收录, JCR Q1)

[2] Yajiu Zhang, Zhuhong Liu, Guodong Liu, Xingqiao Ma, Z. X. Cheng. Robust fully-compensated ferrimagnetism and semiconductivity in inverse Heusler compounds: Ti2VZ (Z = P, As, Sb, Bi). Journal of Magnetism and Magnetic Materials. 2018, 449: 515-521. (SCI收录, JCR Q2)

[3] Yajiu Zhang, Zhuhong Liu, Guodong Liu, Xingqiao Ma. Structural, electronic and magnetic properties of CoFeTiGa1-xSbx compounds. Journal of Magnetism and Magnetic Materials. 2017, 422: 32-36. (SCI收录, JCR Q2)

[4] Yajiu Zhang, Zhuhong Liu, Enek Liu, Guodong Liu, Xingqiao Ma, Guangheng Wu. Towards fully compensated ferrimagnetic spin gapless semiconductors for spintronic applications. Europhysic Letters. 2015, 111: 37009. (SCI收录, JCR Q2)

[5] Yajiu Zhang, Zhuhong Liu, Guodong Liu, Xingqiao Ma. Half-metallic fully compensated ferrimagnetism in C1b-type half Heusler compounds Mn2Si1-xGex. Journal of Magnetism and Magnetic Materials. 2015, 387: 67-71. (SCI收录, JCR Q2)

[6] Yajiu Zhang, Zhuhong Liu, Getian Li, Xingqiao Ma. Magnetism, band gap and stability of half-metallic property for the quaternary Heusler CoFeTiZ (Z = Si, Ge, Sn). Journal of Alloys and Compounds. 2014, 616: 449-453. (SCI收录, JCR Q1)

[7] Zhuhong Liu, Yajiu Zhang, Guodong Liu, Bei Ding, Enke Liu, H.M. Jafri, Zhipeng Hou, Wenhong Wang, Xingqiao Ma, Guangheng Wu. Transition from Anomalous Hall Effect to Topological Hall Effect in Hexagonal Non-Collinear Magnet Mn3Ga. Scientific Reports, 2017, 7: 515. (SCI收录, JCR Q1)

[8] Zhuhong Liu, Yajiu Zhang, Hongguo Zhang, Xiaojing Zhang, Xingqiao Ma, Giant exchange bias in Mn2FeGa with hexagonal structure, Applied Physics Letters, 2016, 109: 032408. (SCI收录, JCR Q1)

[9] Zhuhong Liu, Yajiu Zhang, Enke Liu, Guodong Liu, Xingqiao Ma, Guangheng Wu, Role of d-d and p-d hybridization in CoTi-based magnetic semiconductors with 21 and 26 valence electrons, Journal of Physics D: Applied Physics, 2015, 48: 325001. (SCI收录, JCR Q2)

[10] Zhuhong Liu, BuriguA. Yajiu Zhang, Hasnain Mehdi Hafri, Xingqiao Ma, Enke Liu, Wenhong Wang, Guangheng Wu. Giant topological Hall effect in tetragonal Heusler alloy Mn2PtSn. Scripta Materialia, 2017, 143: 122-125. (SCI收录, JCR Q1)

[11] Xiaojing Zhang, Zhuhong Liu, Yajiu Zhang, Hongyan Liu, Guodong Liu, Y.T. Cui, Xingqiao Ma, Theoretical and experimental study of the phase formation for Ti2YAl and Ti2Y′Ga (Y = Co, Fe; Y′ = Cr, Fe). Intermetallics, 2016, 73: 26-30. (SCI收录, JCR Q1)