位置：成果数据库 > 期刊 > 期刊详情页
Heusler合金Fe_2CrGa的磁性与结构
  • ISSN号：1000-3290
  • 期刊名称：《物理学报》
  • 时间：0
  • 分类：O484.43[理学—固体物理;理学—物理]
  • 作者机构：[1]中国科学院物理研究所磁学国家重点实验室,北京100190, [2]内蒙古大学物理科学与技术学院,呼和浩特010021, [3]河北工业大学材料科学与工程学院,天津300130, [4]北京有色金属研究总院分析测试中心,北京100088
  • 相关基金：国家自然科学基金（批准号：51031004）; 国家重点基础研究发展计划（批准号：2010CB833102）资助的课题~~
作者： 朱伟[1], 刘恩克[1], 张常在[1,2], 秦元斌[1], 罗鸿志[3], 王文洪[1], 杜志伟[4], 李建奇[1], 吴光恒[1]
关键词： Fe_2CrGa, 磁性与结构, 相干势近似, HEUSLER合金, Fe_2CrGa, magnetic properties and structure, coherent potential approximation, Heusler alloy
中文摘要：

采用KKR-CPA-LDA方法研究了不同混乱占位时Fe_2CrGa合金基态的电子结构和磁结构.基态能量表明Fe_2CrGa合金更倾向于形成Hg_2CuTi型有序结构,而不是L2_1结构.能态密度（DOS）分析进一步揭示受晶体场影响的磁性原子内部交换作用是使Fe_2CrGa合金形成Hg_2CuTi型有序结构的主要原因.测量了不同热处理所得Fe_2CrGa合金的居里温度和分子磁矩,发现原子占位有序化可以在137K温度范围内调控合金的居里温度.分子磁矩随有序化占位也有相应变化,分布在2.28μ_B/f.u.—2.48μ_B/f.u.之间.理论计算和实验对比可证明Fe_2CrGa合金是Hg2CuTi型Heusler合金.

英文摘要：

The KKR-CPA-LDA method was used to calculate the electronic and the magnetic structures of Fe_2CrGa alloy.The results indicate that Fe_2CrGa alloy prefers to crystallize in Hg_2CuTi-type structure rather than L2_1 one.The analysis of density of states reveals that the intra-atomic exchange splitting affected by crystal field plays an important role in forming the Hg2CuTi-type structure. The molecular magnetic moments measured experimentally are in a range of 2.28—2.48_（μB） / f.u.,which is very close to that expected theoretically by the calculations based on the Hg_2CuTi-type structure,but not based on the L2_1 structure.The experimental results also show that the Curie temperature of Fe_2CrGa alloy can be continuously manipulated from 308K to 445K by heat-treating under the various conditions,indicating a high sensitivity of the exchange interaction to the atomic ordering in this system.

同期刊论文项目
　强关联体系中原子与自旋动态的中子散射研究
期刊论文 16
磁性调控成相研究和新型磁性相变材料探索
期刊论文 108 会议论文 28
同项目期刊论文
Coexistence of reentrant-spin-glass and ferromagnetic martensitic phases in the Mn(2)Ni(1.6)Sn(0.4)
Phase transition induced vertical alignment of ultrathin gallium phosphide nanowire arrays on silico
Temperature-dependent and polarization-tuned resistive switching in Au/BiFeO3/SrRuO3 junctions
Analysis of the alternating current conductivity and magnetic behaviors for<br />the polycryst
Anisotropic (Sm,Pr)(1)Co-5 based nanoflakes fabricated by high-energy ball milling in polar milling
High-Performance Programmable Memory Devices Based<br /> on Co-Doped BaTiO 3
<span style="font-family:;" arial";font-size:14pt;"=""> <br c
Multi-step magnetization of the Ising model on a Shastry&ndash;Sutherland lattice: a Monte Carlo
Temperature and Pressure-Mediated Structural Transition of ZnS Nanoparticles
High strength and ductility in multimodal-structured Zr
Effect of strain rate on microstructure evolutions and mechanical properties of cryorolled Zr upon a
发现MMX合金居里温度窗口的启示
Anomalous phase separation in La0.225Pr0.4Ca0.375MnO3:<br /> consequence of temperature and m
High fracture toughness in a hierarchical nanostructured zirconium
Effect of thermomechanical deformation on the magnetic anisotropy of bulk alpha-Fe/Nd2Fe14B nanocomp
Significant disorder-induced enhancement of the magnetization of Fe 2CrGa by ball milling
替代掺杂的MnNiGe_(1-x)Ga_x合金中马氏体相变和磁-结构耦合特性
Ferromagnetic structures in Mn2CoGa and Mn2CoAl doped by Co, Cu, V, and Ti
过渡金属氧化物薄膜阻变存储材料研究
多铁性纳米点结构及微纳器件应用
Unattenuated conical spin wave in spiral magnet: The role<br /> of Dzyaloshinskii-Moriya inte
Anomalous phase separation in La0.225Pr0.4Ca0.375MnO3: consequence of temperature and magnetic-field
Metamagnetic phase transformation in Mn50Ni37In10Co3 polycrystalline alloy
7. Magnetostructural Transformation and Magnetoresponsive Properties of MnNiGe1-xSnx Alloys
Critical magnetic transition in TbNi2Mn&mdash;magnetization and M&uml;ossbauer spectroscopy
Magnetoelasticity and elasticity of Fe85Ga15 single crystals under coupled magnetomechanical loading
Atomic-size effect on the microstructural properties of Ni2FeGa
Leakage behaviors of ferroelectric (Bi3.15Nd0.85)Ti3O12 thin film derived from RF sputtering
Ni50？xMn10+xGa30Cu10 系列Heusler 合金的结构、马氏体相变和磁性研究
Thermal-vacancy-assisted phase transition in FePt thin films
19. Magnetic-field-induced martensitic transformation in MnNiAl:Co alloys
Ni_2 In型六角MM’X铁磁马氏体相变材料及其研究进展
Origin of the constricted hysteresis loop in cobalt ferrites revisited
Large magnetization change and magnetoresistance associated with martensitic transformation in Mn2Ni
Nonmagnetic B-site substitution induced two-phase coexistence in multiferroic manganites: Monte Carl
Bulk α-Fe/Nd2Fe14B nanocomposite magnets prepared by hot deformation of amorphous Nd10.5Fe82Cu1.5B6
Structure and magnetic properties of Fe<sub>2</sub>NiZ (Z=Al, Ga, Si and Ge) Heusler all
Magnetic and anomalous transport properties in Fe2MnAl
High-Performance Programmable Memory Devices Based on Co-Doped BaTiO3.
Magnetic behaviors of classical spin model on the Shastry&ndash;Sutherland lattice: Monte Carlo
Phase transition of FePt/Ag nanocomposite thin films: Kinetics, activation volume, and atomic proces
Magnetic Structures of Pr0.8Lu0.2Mn2Ge2 and Pr0.6Lu0.4Mn2Ge2
Bubble polarization domain patterns in periodically ordered epitaxial ferroelectric nanodot arrays
Origin of the constricted hysteresis loop in cobalt ferrites revisited :Hong-guo Zhang, Yu-Jie Zhang
An extraordinary enhancement of strain hardening in fine-grained Zirconium
<span style="font-family:'Times New Roman';font-size:12pt;">Temperature an
Fragile magnetic ground state and metal-insulator transitions in CaCrO3: The<br /> first-princ
<SPAN style="FONT-FAMILY: ; COLOR: black" Roman?,?serif?;font-size:11pt;? New Times>
A hierarchical nanolamella-structured alloy with excellent combinations of tensile properties
C轴压力下ZnO晶体结构及电子性质的第一性原理研究
Dielectric and magnetic properties of BiFe1-4x/3TixO3 ceramics with iron vacancies: Experimental and
Anisotropic (Sm,Pr)1Co5 based nanoflakes fabricated by high-energy ball milling in polar milling med
Coercivity mechanism of α-Fe/Nd2Fe14B nanocomposite magnets with an intergranular amorphous phase
<span style="font-family:'Times New Roman';font-size:12pt;">Transition tem
Development of crystal texture in R-lean RFeCoNbB (R=Nd, Pr) alloy during melt spinning processes
Preparation and magnetic properties of anisotropic (Sm,Pr)Co5/Co composite particles
4. Coexistence of reentrant-spin-glass and ferromagnetic martensitic phases in the Mn2Ni1.6Sn0.4 Heu
Bulk anisotropic nanocomposite magnets prepared by thermo-mechanical process of Nd3.6Pr5.4Fe83Co3B5
Multiferroic response to magnetic field in orthorhombic manganites
Simultaneously increasing the magnetization and coercivity of bulk nanocomposite magnets via severe
Texturing for bulk &alpha;-Fe/Nd2Fe14B nanocomposites with enhanced magnetic properties
Transition temperature reduction for CdS nanoparticles under high pressure
Multiferroic properties in orthorhombic perovskite manganites: Monte Carlo simulation
DyNi2Mn—magnetisation and M？ssbauer spectroscopy
Co50Fe25-xMnxSi25系列合金的结构、磁性和半金属性研究
Asymmetric reversible diode-like resistive switching behaviors in ferroelectric BaTiO3 thin films
Tailoring the structural and magnetic properties of Cu-doped ZnO by c-axis pressure
A coupling of martensitic and metamagnetic transitions with collective magneto-volume and table-like
亚铁磁Heusler合金Mn2CoGa和Mn2CoAl掺杂Cr, Fe和Co的局域铁磁结构
Multiferroic phase transitions in manganites RMnO_3：A two-orbital double exchange simulation
Asymmetric reversible diode-like resistive switching behaviors in ferroelectric BaTiO3 thin films
Co_(50)Fe_(25-x)Mn_xSi_(25)系列合金的结构、磁性和半金属性研究
低温时效处理对铁磁形状记忆合金Mn2NiGa的结构、相变和磁性能的影响
Hybrid double-dot qubit measurement with a quantum point contact
Magnetic entropy change involving martensitic transition in NiMn-based Heusler alloys
Spinel lithium titanate (Li4Ti5O12) as novel anode material for room-temperature sodium-ion battery
Co50Fe50-xSix合金的结构相变和磁性
Research on Atomic-Scale Investigation of Li Storage Mechanism in Spinel Li4Ti5O12
内应力对Mn_2NiGa铁磁形状记忆合金的结构、相变和磁性能的影响
Superconductivity and spin fluctuations
超导与自旋涨落
Hydrogenation structure and magnetic properties of La（Fe0.91Si0.09）13 hydrides and deuterides
Significant effect of electron transfer between current collector and active material on high rate performance of Li4Ti5O12
The interplay between the lattice and magnetism in La（Fe11.4Al1.6）C0.02 studied by powder neutron diffraction
The crystal structure,magnetism,and colossal magnetoresistance of Y2CrS4
Quantum state measurement in double quantum dots with a radio-frequency quantum point contact
期刊信息
  • 《物理学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国物理学会 中国科学院物理研究所
  • 主编：欧阳钟灿
  • 地址：北京603信箱(中国科学院物理研究所)
  • 邮编：100190
  • 邮箱：apsoffice@iphy.ac.cn
  • 电话：010-82649026
  • 国际标准刊号：ISSN：1000-3290
  • 国内统一刊号：ISSN：11-1958/O4
  • 邮发代号:2-425
  • 获奖情况:
  • 1999年首届国家期刊奖,2000年中科院优秀期刊特等奖,2001年科技期刊最高方阵队双高期刊居中国期刊第12位
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国科学引文索引（扩展库）,英国科学文摘数据库,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:49876