Quantum Design中国用户科研成果快报（2022年第4期）

2022-05-25 18:26:32, Dr. Sun QUANTUM量子科学仪器贸易（北京）有限公司

Quantum Design中国用户科研成果快报（2022年第4期）

《Quantum Design中国用户科研成果快报》是由Quantum Design中国定期汇总Quantum Design中国用户（包括综合物性测量PPMS、全新一代磁学测量系统MPMS3用户等）在众多研究领域的近期科研成果，为大家的相关科学研究提供参考。

本期文献目录：

1. A Generic Sacrificial Layer for Wide-Range Freestanding Oxides with Modulated Magnetic Anisotropy. Advanced Functional Materials (2022) 清华大学于浦等.

2. Weyl Semimetal States Generated Extraordinary Quasi-Linear Magnetoresistance and Nernst Thermoelectric Power Factor in Polycrystalline NbP. Advanced Functional Materials (2022) 武汉理工大学唐新峰等.

3. Mechanistic understanding of the charge storage processes in FeF₂ aggregates assembled with cylindrical nanoparticles as a cathode material for lithium‐ion batteries by in situ magnetometry. Carbon Energy (2022) 青岛大学李强等.

4. Customizing Heterointerfaces in Multilevel Hollow Architecture Constructed by Magnetic Spindle Arrays Using the Polymerizing-Etching Strategy for Boosting Microwave Absorption. Adv Sci (Weinh) (2022) 复旦大学车仁超等.

5. Engineering Magnetic Anisotropy and Emergent Multidirectional Soft Ferromagnetism in Ultrathin Freestanding LaMnO₃ Films. ACS Nano (2022) 中科大陆亚林等.

6. Quantum Critical Magnetic Excitations in Spin-1/2 and Spin-1 Chain Systems. Physical Review X (2022) 复旦大学李世燕等.

7. Magnetic 3d-4f Chiral Clusters Showing Multimetal Site Magneto-Chiral Dichroism. J Am Chem Soc (2022) 厦门大学郑兰荪等.

8. Greatly enhanced methanol oxidation reaction of CoPt truncated octahedral nanoparticles by external magnetic fields. Energy & Environmental Materials (2022) 北京科技大学王守国等.

9. Anomalous Structural Evolution and Glassy Lattice in Mixed-Halide Hybrid Perovskites. Small (2022) 中科大李晓光等.

10. An experimental strategy for evaluating the energy performance of metal–organic framework-based carbon dioxide adsorbents. Chemical Engineering Journal (2022) 中科院大连化物所史全等.

11. Revealing interfacial space charge storage of Li⁺/Na⁺/K⁺by operando magnetometry. Science Bulletin (2022) 青岛大学李强等.

12. Vortex tuning magnetization configurations in porous Fe₃O₄nanotube with wide microwave absorption frequency. Nano Research (2022) 复旦大学车仁超等.

13. Realizing Ferromagnetism in a Field‐Effect Transistor Based on VSe₂ Thin Flakes. Advanced Electronic Materials (2022) 中科大陈仙辉等.

14. Direct evidence of mutual control of ferroelectric polarization and magnetization in Y-type hexaferrite BaSrCo₂Fe₁₂_-xAl_xO₂₂ ceramics. Journal of Alloys and Compounds (2022) 华南师大曾敏等.

15. Electronic reconstruction induced inverted hysteresis loop in La_0.67Sr_0.33MnO₃/Pb(Zr_0.52Ti_0.48)O₃superlattices. Journal of Alloys and Compounds (2022) 山东大学颜世申等.

16. Stabilization and superconductivity of AlB₂-type nonstoichiometric molybdenum diboride by Sc doping. Ceramics International (2022) 浙江大学曹光旱等.

17. Dielectric properties and magnetoelectric coupling in polar magnet (Fe,Zn)₂Mo₃O₈. Ceramics International (2022) 华南师大曾敏等.

18. Structure and the enhanced ferromagnetism in single phase Sr₄Fe₅CoO_13-δ ceramic. Ceramics International (2022) 中科大陆亚林等.

19. Slow magnetic relaxation in a trigonal-planar mononuclear Fe(II) complex. Dalton Transactions (2022) 南京大学宋友等.

20. Double-dome superconductivity under pressure in the V-based kagome metals AV₃Sb₅ (A=Rb and K). Physical Review B (2022) 复旦大学李世燕等.

21. NdAlSi: A magnetic Weyl semimetal candidate with rich magnetic phases and atypical transport properties. Physical Review B (2022) 中科院物理所陈根富等.

22. Critical behavior and phase diagram of layered ferromagnetic FeTa₃S₆ single crystals. Physical Review B (2022) 中科大王中平等.

23. Angle dependent field-driven reorientation transitions in uniaxial antiferromagnet MnBi₂Te₄ single crystal. Applied Physics Letters (2022) 重庆大学周小元等.

24. Degradation Effect and Magnetoelectric Transport Properties in CrBr₃ Devices. Materials (2022) 北京科技大学王守国等.

25. A disorder-sensitive emergent vortex phase identified in high-Tc superconductor (Li,Fe)OHFeSe. Superconductor Science and Technology (2022) 中科院物理所董晓莉等.

26. Abnormal Magnetoresistance Transport Properties of van der Waals Antiferromagnetic FeNbTe₂. Frontiers in Physics (2022) 中南大学郭光华等.

27. Fully understanding the performance of nanocrystalline ternary Pr-Fe-B alloys with three typical phase constitutions. Journal of Magnetism and Magnetic Materials (2022) 华南理工大学刘仲武等.

28. Large magnetocaloric effect in antiferromagnetic ternary carbide Dy₂Cr₂C₃ around liquid hydrogen temperature. Journal of Magnetism and Magnetic Materials (2022) 中科院金属所张志东等.

29. Effect of Cr, N co-doping on the structural and optical properties of ZnO thin films deposited by pulsed laser deposition. Journal of Materials Science: Materials in Electronics (2022) 山西师范大学许小红等.

30. Superconducting dome associated with the suppression and re-emergence of charge density wave states upon sulfur substitution in CuIr₂Te₄chalcogenides. J Phys Condens Matter (2022) 中科院物理所程金光等.

31. Magnetic and Magnetocaloric Properties in the Non-stoichiometric Fe_2+xTa_1-x (x = 0–0.25) Alloys. Journal of Superconductivity and Novel Magnetism (2022) 杭州电子科技大学李领伟等.

32. Anomalous Hall effect of facing-target sputtered ferrimagnetic Mn₄N epitaxial films with perpendicular magnetic anisotropy. Chinese Physics B (2022) 天津大学米文博等.

33. A highly polar hybrid perovskite of [FCH₂CH₃NH₃][Mn(HCOO)₃]. Zeitschrift für anorganische und allgemeine Chemie (2022) 北京大学王哲明等.

34. Compositional Dependence of Epitaxial L1₀‐Mn_xGa Magnetic Properties as Probed by ⁵⁷Mn/Fe and ¹¹⁹In/Sn Emission Mössbauer Spectroscopy. physica status solidi (b) (2022) 中科院半导体所赵建华等.

清华大学于浦等

A Generic Sacrificial Layer for Wide-Range Freestanding Oxides with Modulated Magnetic Anisotropy. Advanced Functional Materials (2022)

摘要

氧化物自支撑薄膜因其特有的丰富电子态和柔性特性受到科研工作者的广泛关注。目前已研发了多种材料作为牺牲层，再利用湿法刻蚀从基片上剥离薄膜。而现有牺牲层材料受到晶格结构复杂或者需要强腐蚀性溶液等局限性的挑战。在这里，我们提出一种新的牺牲层材料SrCoO_2.5，它可以大范围调控生长材料的应力和晶体取向，并溶于环境友好的溶液，如醋酸、醋，甚至碳酸饮料。本文以SrCoO_2.5为牺牲层，获得了高质量的自支撑铁磁SrRuO₃膜，具有大范围的外延应变和不同晶向。通过研究这些样品的磁性能变化，发现外延应变对(001)pc取向SrRuO₃的磁性各向异性有明显的改变，而对(110)pc和(111)pc取向薄膜的影响不明显。本研究不仅证明了SrRuO₃是一种有前途的柔性自旋电子器件材料，而且也为利用这种新开发的牺牲层材料来设计各种应变和取向的复杂氧化物以用于新型的独立电子器件提供了一个很好的机会。

PPMS Resistivity + MPMS

The magnetic properties of all samples, including temperature-dependent magnetization (M-T) and magnetic hysteresis loops (M-H), were measured using a 7 T Magnetic Property Measurement System (Quantum Design). Electronic transport measurements were conducted in a standard Hall bar geometry with a 9 T PPMS DynaCool system (Quantum Design).

武汉理工大学唐新峰等

Weyl Semimetal States Generated Extraordinary Quasi-Linear Magnetoresistance and Nernst Thermoelectric Power Factor in Polycrystalline NbP. Advanced Functional Materials (2022)

摘要

Weyl半金属具有不饱和、巨大磁阻MR以及巨大的能斯特效应等新奇输运现象，在磁电传感器和横向热电转换方面具有潜在应用前景。这些新奇现象源于Weyl半金属态，即电子和空穴能带共存并具有线性能带色散关系。然而，以往的研究主要集中在小尺寸的单晶上，限制了Weyl半金属的实际应用。本文发现在制备的厘米尺寸多晶Weyl半金属NbP中存在不饱和、准线性MR以及巨大的能斯特功率因子PFxy 。在60 K以下，磁场高达55 T时，不寻常磁阻高达≈2×10⁴%，并延续到高温，结构无序导致的经典线性MR理论可以解释该材料中的反常准线性MR。多晶NbP在9 T、220 K时，能斯特PFxy 大可达74.81 μW cm^–1 K^–2 ，是其纵向热电功率因数PFxx 的1.5倍。由于Weyl半金属NbP为多晶材料，适于大规模生产，可应用于磁电传感器和横向热电转换领域。

PPMS Resistivity

The measurements of electrical resistivity (ρ_xx) and Hall resistivity (ρ_yx) in the range of 2–300 K and up to 9 T were carried out in a Quantum Design Physical Property Measurement System (PPMS-9). Thermoelectric properties under magnetic fields and the Nernst thermopower in the range of 30–300 K were measured using a custom-built cryogenic physical properties measurement platform based on the PPMS-9T, including the Seebeck coefficient (S_xx) and thermal conductivity (κxx) as well as the Nernst thermopower (S_xy).

青岛大学李强等

Mechanistic understanding of the charge storage processes in FeF2 aggregates assembled with cylindrical nanoparticles as a cathode material for lithium‐ion batteries by in situ magnetometry. Carbon Energy (2022)

摘要

过渡金属氟化物(TMFs)正材料在电化学储能方面表现出非凡的潜力，但由于电池内部环境的复杂和不断变化，其电化学反应机制仍存在争议。在此，我们设计了一种新颖的柱状纳米粒子氟化铁(FeF₂)聚集体作为正材料，构建了FeF₂锂离子电池(LIBs)，并采用先进的原位磁强计实时监测循环过程中的本征电子结构。结果表明，FeF₂锂电池在常规电压1.0 ~ 4.0 V范围内工作时，FeF₂并未完全参与转换反应，相应的FeF₂转化率可进一步估算获得。重要的是，我们首先通过监测不同电压范围内的磁响应，发现FeF₂正中存在自旋化表面电容。本研究为研究TMFs的转换机制提供了一种新颖的方法，为未来基于自旋化表面电容的能量系统的人工设计提供了重要参考。

PPMS VSM

We assembled a flexible soft package battery with a long strip geometry using the prepared FeF₂ aggregates as the working electrode in argon‐filled glove box, and then placed it inside a quantum design PPMS at room temperature (300 K). The magnetic moment was monitored through a Quantum Design PPMS agnetometer at room temperature (300 K).

复旦大学车仁超等

Customizing Heterointerfaces in Multilevel Hollow Architecture Constructed by Magnetic Spindle Arrays Using the Polymerizing-Etching Strategy for Boosting Microwave Absorption. Adv Sci (Weinh) (2022)

摘要

异质界面工程是调控电磁功能材料的有效手段，但异质界面对微波吸收MA的作用机制尚不清楚。在这项工作中，通过一步协同聚合-刻蚀策略，在多层多孔结构中定制了丰富的电磁异质界面。其中可控还原工艺可将FeOOH@polydopamine前驱体转化为Fe/Fe₃O₄@C的纺锤形结构。并在Fe/Fe₃O₄@C这一多孔纺锤阵列上实现了令人印象深刻的电磁异质结构，诱发了强界面化。高分散的Fe/Fe₃O₄纳米颗粒在纺锤内形成多维度磁性网络，增强入射微波的作用和磁损耗容量。此外，分层中空结构和电磁协同元件有利于吸波材料与空气介质的阻抗匹配。此外，本文还对MA电磁异质界面的形成机理进行了系统的研究。因此，制备的层次化Fe/Fe₃O₄@C具有显著的MA性能，大反射损耗为−55.4 dB，吸收带宽为4.2 GHz。因此，本研究不仅展示了多层中空结构的协同设计策略，而且为高效电磁功能材料的异质界面工程提供了基础指导。

MPMS

The hysteresis loops were performed with a superconducting quantum interference device (MPMS(SQUID) VSM) magnetometer (Quantum Design Company).

中科大陆亚林等

Engineering Magnetic Anisotropy and Emergent Multidirectional Soft Ferromagnetism in Ultrathin Freestanding LaMnO3 Films. ACS Nano (2022)

摘要

小矫顽场和弱磁各向异性的结合，使得软磁薄膜可应用于柔性自旋电子器件。然而，弱磁各向异性的软磁材料比较稀缺，特别是厚度只有几纳米甚至更薄的超薄软磁薄膜。本文中，我们在Si上合成了大面积、高质量、超薄自支撑LaMnO₃薄膜，当薄膜厚度减小到4 nm时，面内和面外磁各向异性的消失，并均表现为软磁性，这一现象可以归因于LaMnO₃薄膜中不同原子层中分别存在两种不同易磁化轴，相互抵消。光谱学测量显示，由于水溶解过程，大量氢渗透发生在薄膜表面，锰的价态从内部的3+变化到表面的接近2+。性原理计算表明，当LaMnO₃中Mn的价态由3+降低到2+价，会使得磁易轴由面内变为面外。我们的工作表明，超薄无基底的悬空薄膜可以表现出在体态材料中所没有的功能特性，同时与硅基器件兼容。

MPMS

For obtaining samples measurable by SQUID-VSM (size ≤5 mm), we used a ceramic knife to slice the epitaxial film into small pieces of approximately 3×3 mm².

复旦大学李世燕等

Quantum Critical Magnetic Excitations in Spin-1/2 and Spin-1 Chain Systems. Physical Review X (2022)

摘要

CoNb₂O₆处于简单和复杂的交汇处：一方面， CoNb₂O₆可以用横向磁场下的Ising链模型阐释，因此，它可以作为量子临界的原型；另一方面，弱但非零的链间耦合增加了系统的几何挫折，使材料相图复杂化。本文利用低温比热、热导率测量研究了CoNb₂O₆及其同构材料的NiNb₂O₆（自旋为1）的低能磁激发。发现在量子临界点附近，热导率被抑制，而由于无间隙磁激发，比热被增强，体现了比热的局域性质。这些结果突出了在自旋链的量子临界磁激发方面，几何阻挫的重要作用，这可能进一步解释了自旋1/2和自旋1系统的现象学之间的显著相似性。

PPMS HC & DR

The specific heat of NiNb₂O₆ was measured by the relaxation method in a Quantum Design physical property measurement system equipped with a dilution refrigerator.

厦门大学郑兰荪等

Magnetic 3d-4f Chiral Clusters Showing Multimetal Site Magneto-Chiral Dichroism. J Am Chem Soc (2022)

摘要

在这里，我们报道了羟基桥接{Ln5Ni6} ((Ln³⁺ = Dy³⁺, Y³⁺)金属团簇、映体手性配体(R/S)-(2-hydroxy-3-methoxybenzyl)-serine)、 Ni^II 和 Ln^III前驱体的分子自组装化合物。单晶衍射分析表明，这些化合物与具有螺旋手性的三明治3d-4f型异金属簇合物同构。{Dy₅Ni₆}的直流电磁测量表明Dy^III 和Ni^II中心存在铁磁耦合，而 {Y₅Ni₆}的直流电磁测量表明NiII中心是反铁磁耦合和/或磁各向异性的。{Dy₅Ni₆}的磁手性二色性(MChD)测量实现了次在可见-近红外区域强烈的多金属位点MChD信号的实验观测。此外，MChD与自然和磁圆二向色性谱的比较首次明确地表明，与Ni^II d-d跃迁有关的MChD信号主要由自然旋光性驱动，而与Dy^IIIf-f跃迁有关的MChD信号由磁旋光性驱动。

MPMS

Magnetic measurements were carried out with a Quantum Design SQUID MPMS magnetometer working in the 2−300 K range.

北京科技大学王守国等

Greatly enhanced methanol oxidation reaction of CoPt truncated octahedral nanoparticles by external magnetic fields. Energy & Environmental Materials (2022)

摘要

通过外部磁场、温场和电场等多种场来调节电催化的行为，是未来拓展催化剂和电池的理论、设计和合成领域具潜力的方法。本文系统地研究了外加磁场和温场对磁性纳米颗粒催化甲醇氧化反应MOR性能的影响。对于Co₄₂Pt₅₈截角八面体纳米粒子(TONPs)，在3000 Oe的外场情况下，MOR催化性能大值显著提高了14.1%，且催化性能随工作温度的升高呈单调上升趋势。外磁场增强效应与Co_xPt_100-x TONPs中Co含量密切相关。另外，外磁场增强效应对650℃退火的Co₄₂Pt₅₈ TONPs效果更显著。性原理计算指出，磁场可以抑制电子自旋熵和降低活化势垒来促进甲醇和水的脱氢，其中Co位上的OH_ad中间体作用显著。MOR的温场和磁场调控为甲醇燃料电池性能控制提供了新的策略，加速了甲醛燃料电池的潜在应用价值。

MPMS

The magnetic properties of CoPt TONPs and CoPt-Annealed samples were measured via a superconducting quantum interference device (SQUID, Quantum Design)

中科大李晓光等

Anomalous Structural Evolution and Glassy Lattice in Mixed-Halide Hybrid Perovskites. Small (2022)

摘要

混合卤化物钙钛矿因其优异的光电性能而成为具前景的光伏材料，通常通过混合卤化物的成分工程来优化其光电性能。随着温度的变化，混合钙钛矿经历了一系列的结构相变。在这项工作中，作者发现在混合卤化物杂化钙钛矿单晶MAPbI_3-xBr_x (MA = CH₃NH³⁺和x = 1或2)中，利用一组衍射和光谱技术，相变被大大抑制。此外，混合卤化物钙钛矿在较宽的温度范围内存在多种晶体相，在100 K以上的温度范围内，混合卤化物钙钛矿中主要存在一种迄今未报道过的轻微扭曲的单斜相。这种异常的结构演化与混合卤化物钙钛矿中有机阳离子和光学声子的玻璃化行为有关。这项工作证明了混合钙钛矿中成分工程和晶格动力学之间的复杂相互作用，为它们的独特性质提供了新的线索

PPMS

For dielectric measurements, opposite faces of the perovskite single crystals were painted with silver paste as electrodes, and the samples were positioned inside the cryostat of a physical property measurement system (Quantum Design, PPMS-9T), with the temperature controlled in the range from 50 to 300 K.

中科院大连化物所史全等

An experimental strategy for evaluating the energy performance of metal–organic framework-based carbon dioxide adsorbents. Chemical Engineering Journal (2022)

摘要

近年来，金属有机框架(MOFs)作为一种潜在的CO₂吸附剂，在碳捕集与封存(CCS)领域引起了广泛关注。在筛选合适的CCS MOF吸附剂时，与再生过程相关的能源性能是一个至关重要的因素。然而，很少有实验方法来评估其再生所需的能量。在此，我们结合量热法和热分析方法，提出了一种实验方面，评估MOF吸附剂在变温吸附(TSA)过程中的能量性能。紧接着对五种特征良好的同构锆基MOFs(奥斯陆大学 66-X，其中X = H, NH₂, (OH)₂, C₄H₄, or NO₂)进行了评估，确定了与再生相关的能量参数，包括比热容、热力学函数、解吸温度、再生能、CO₂工作容和寄生能。结果表明，决定CO₂吸附剂再生能源效率的关键因素是TSA循环中比热容和CO₂的工作容。更重要的是，我们提出的方法可能为研究和评估吸附剂的二氧化碳捕获潜力提供了一种可行和有效的实验方法。

PPMS HC

The specific heat capacities of these MOFs were accurately measured using a PPMS calorimeter, and their sensible heat values in the temperature swing range were calculated accordingly.

青岛大学李强等

Revealing interfacial space charge storage of Li+/Na+/K+ by operando magnetometry. Science Bulletin (2022)

摘要

离子与电子导体之间的界面空间电荷存储是进一步提高碱金属离子电池(AMIBs)能量和功率密度的有效方法。然而，由于AMIBs中电化学行为复杂性和合适的表征技术的缺乏，对其空间电荷存储的普遍行为的实验研究较少。本文利用原位实时磁强计证实在FeSe₂ AMIB中，丰富的Li⁺/Na⁺/K⁺ (M+)可以存储在M₂Se相中，而电子聚集在Fe纳米颗粒中，形成界面空间电荷层。磁性和动力学实验进一步表明，Li⁺、Na ⁺到K ⁺，随着离子半径的增加，反应动力学受到阻碍，导致Fe的生成受限，空间电荷存储能力下降。该工作为研究电化学过程中复杂的界面效应和设计具有大容量和大功率密度的先进储能器件奠定了坚实的基础。

PPMS HC

The magnetic measurements were performed on a Quantum Design physical property measurement system (PPMS) magnetometer.

复旦大学车仁超等

Vortex tuning magnetization configurations in porous Fe₃O₄ nanotube with wide microwave absorption frequency. Nano Research (2022)

摘要

1D磁性材料的设计和优化对于能量转换、存储和自旋电子器件的发展都具有重要意义，但目前仍具挑战。本文采用静电纺丝和煅烧相结合的方法制备了1D多孔Fe3O4纳米管NTs。在静电纺丝前驱体中，调节两种不同分子量的聚烯吡酮的含量比，可制备出具有涡旋畴结构的多孔Fe₃O₄ NTs。基于独特的多畴包裹的一维纳米管结构， Fe₃O₄ NTs展现出较高的复合磁导率(μ’，μ″)，具有较强的磁存储和耗散能力，并具有良好的微波吸收(MA)性能，其大反射损耗值为−57.1 dB，有效吸收带宽为12.0 GHz。其中，该材料中磁涡流导致自旋波共振的增强对提高了高频下的MA耗散至关重要。另外，本文通过电子全息和微磁模拟，分别确定了该材料中相关磁通量线分布和磁畴磁矩，为深入了解其微波吸收机理提供了依据

MPMS

The hysteresis loops were measured by vibrating sample magnetometer (MPMS VSM, Quantum Design Company).

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