MRI: Acquisition of a Quantum Design Magnetic Property Measurement System (MPMS)

MRI：获取量子设计磁特性测量系统 (MPMS)

• 批准号: 1920086
• 负责人: Darrell Schlom
• 金额: $ 57.75万
• 依托单位: Cornell University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1920086&HistoricalAwards=false
• 关键词: MRI; Acquisition; Quantum; Design; Magnetic

Advances in modern technology are tightly linked to the discovery of materials that provide new or superior properties compared to existing ones. The vast knowledge of existing materials, their corresponding properties, and our emerging understanding of the connection between the positions of atoms in materials and the properties they possess allows researchers to more skillfully design new materials with sought after properties. The pace of progress between implementing design ideas that are believed to lead to superior materials and the actual discovery of superior materials is crucially dependent on feedback on the actual atomic structure and properties of the materials made. With such feedback the validity of materials design ideas is verified or denied, providing knowledge that can be acted upon in refined attempts to make superior materials. The equipment made possible by this grant is an important element of the path to accelerate the discovery of magnetic materials. It is also useful to identifying new superconductors as superconductors expel magnetic fields, which this equipment measures with a 100-fold increase in sensitivity compared to existing instruments at Cornell University currently being used for this purpose. These more sensitive and accurate magnetic measurements will also aid scientists using Cornell's national user facility supported by the NSF known as PARADIM in their quest to discover new magnetic materials and new superconductors. PARADIM's mission is to accelerate the discovery of inorganic materials. The enhanced sensitivity of the equipment made possible by this grant is vital to PARADIM's focus on "interface materials," where magnetic effects can originate from a single layer of atoms within a sample containing typically millions of atomic layers. The broader impact of the new instrument includes the training of students and its accessibility to the broad community of researchers within Cornell as well as users from across the nation that come to discover new inorganic materials in PARADIM.The support of this grant enables Cornell University to acquire a Quantum Design Magnetic Property Measurement System (MPMS) to characterize and investigate the magnetic properties of materials. The higher sensitivity of the new MPMS - 100 fold greater than Cornell's existing PPMS systems - will facilitate the investigation of entirely new classes of materials, including atomically thin and interfacial systems, which are currently out of reach, and accelerate the discovery of superior electronic/magnetic materials for researchers from academia, national labs, and industry from across the country. The new instrument will be housed at the Cornell Center for Materials Research (CCMR), whose two general-purpose instruments (Quantum Design PPMS) can characterize magnetic properties, but their limited sensitivity restricts the type of magnetic materials to be investigated. The addition of the MPMS will accelerate materials discovery, which is the mission of the recently NSF-funded national user facility headquartered at Cornell known as the Platform for the Accelerated Realization, Analysis, and Discovery of Interface Materials (PARADIM), an NSF Materials Innovation Platform. This MPMS will also greatly enhance the ability of Cornell researchers in areas ranging from spintronics, superconductivity, and two-dimensional materials, to electronic and magnetic devices, impacting the productivity of 19 faculty members across 4 departments and 2 colleges, as well as one of the interdisciplinary research groups (IRGs) of the NSF-MRSEC at Cornell, which is focused on spin manipulation of materials for next-generation magnetic memories and devices.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

现代技术的进步与发现与现有材料相比具有新的或上级性能的材料紧密相关。现有材料的大量知识，它们相应的属性，以及我们对材料中原子位置与它们所具有的属性之间联系的新认识，使研究人员能够更巧妙地设计具有所需属性的新材料。实现被认为导致上级材料的设计思想与实际发现上级材料之间的进展速度关键取决于对所制造材料的实际原子结构和性质的反馈。有了这样的反馈，材料设计思想的有效性得到验证或否定，提供的知识，可以采取行动，在精细的尝试，使上级材料。该补助金所提供的设备是加速磁性材料发现的重要因素。这也有助于识别新的超导体，因为超导体会排出磁场，与康奈尔大学目前用于此目的的现有仪器相比，该设备的灵敏度提高了100倍。这些更灵敏、更准确的磁性测量也将帮助科学家使用由NSF支持的康奈尔大学国家用户设施（称为PARADIM）来探索新的磁性材料和新的超导体。Paradim的使命是加速无机材料的发现。通过这笔赠款，设备的灵敏度得以提高，这对于PARADIM专注于“界面材料”至关重要，在界面材料中，磁效应可以源自通常包含数百万个原子层的样品中的单层原子。新仪器的更广泛的影响包括对学生的培训，以及康奈尔大学内广泛的研究人员社区的可访问性，以及来自全国各地的用户来发现PARADIM中的新无机材料。这笔赠款的支持使康奈尔大学能够获得量子设计磁性能测量系统（MPMS）来表征和研究材料的磁性能。新MPMS的更高灵敏度-比康奈尔现有的PPMS系统高100倍-将促进对全新材料类别的研究，包括原子薄和界面系统，这些材料目前还无法实现，并加速为来自全国各地的学术界，国家实验室和工业界的研究人员发现上级电子/磁性材料。新仪器将被安置在康奈尔材料研究中心（CCMR），其两个通用仪器（量子设计PPMS）可以表征磁性，但它们有限的灵敏度限制了要研究的磁性材料的类型。MPMS的加入将加速材料发现，这是最近NSF资助的国家用户设施的使命，该设施总部设在康奈尔大学，被称为界面材料加速实现，分析和发现平台（PARADIM），NSF材料创新平台。该MPMS还将大大提高康奈尔大学研究人员在从自旋电子学，超导性和二维材料到电子和磁性器件等领域的能力，影响4个部门和2个学院的19名教师的生产力，以及康奈尔大学NSF-MRSEC的跨学科研究小组（IRG）之一。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Raman Spectroscopy and Aging of the Low-Loss Ferrimagnet Vanadium Tetracyanoethylene

• DOI: 10.1021/acs.jpcc.1c04582
• 发表时间: 2021-01
• 期刊: The Journal of Physical Chemistry C
• 作者: H. Cheung;M. Chilcote;H. Yusuf;D. S. Cormode;Yueguang Shi;S. Kurfman;Andrew Franson;M. Flatté;E. Johnston-Halperin;G. Fuchs