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Nuclear magnetic resonance detection in ultra low field regime enables the measurement of different components of a spurious remanence in the polymeric material constituting the sample container. A differential atomic magnetometer detects…

Zero- to ultralow-field nuclear magnetic resonance (ZULF NMR) is an alternative spectroscopic method to high-field NMR, in which samples are studied in the absence of a large magnetic field. Unfortunately, there is a large barrier to entry…

化学物理 · 物理学 2020-04-29 John W. Blanchard , Teng Wu , James Eills , Yinan Hu , Dmitry Budker

As a complementary analysis tool to conventional high-field NMR, zero- to ultralow-field (ZULF) NMR detects nuclear magnetization signals in the sub-microtesla regime. Spin-exchange relaxation-free (SERF) atomic magnetometers provide a new…

量子物理 · 物理学 2020-12-01 Min Jiang , Ji Bian , Qing Li , Ze Wu , Haowen Su , Minxiang Xu , Yuanhong Wang , Xin Wang , Xinhua Peng

Zero and ultralow-field nuclear magnetic resonance (ZULF NMR) is an NMR modality where experiments are performed in fields at which spin-spin interactions within molecules and materials are stronger than Zeeman interactions. This typically…

Magnetic Resonance Imaging (MRI) is universally acknowledged as an excellent tool to extract detailed spatial information with minimally invasive measurements. Efforts toward ultra-low-field (ULF) MRI are made to simplify the scanners and…

应用物理 · 物理学 2019-10-28 Giuseppe Bevilacqua , Valerio Biancalana , Yordanka Dancheva , Antonio Vigilante

Ferromagnetic resonance (FMR) in magnetic multilayers of type F1/f/F2, where two strongly ferromagnetic layers F1 and F2 are separated by a weakly magnetic spacer f with a compositional gradient along its thickness, is investigated. The…

Despite its versatility and high chemical specificity, conventional NMR spectroscopy is limited in measurement throughput due to the need for high-homogeneity magnetic fields, necessitating sequential sample analysis, and bulky devices.…

仪器与探测器 · 物理学 2024-07-02 Blake Andrews , Matthew Lai , Zhen Wang , Norihisa Kato , Michael Tayler , Emanuel Druga , Ashok Ajoy

The newly discovered iron-based superconductors have triggered renewed enormous research interest in the condensed matter physics community. Nuclear magnetic resonance (NMR) is a low-energy local probe for studying strongly correlated…

超导电性 · 物理学 2015-06-16 Long Ma , Weiqiang Yu

We review instrumentation for nuclear magnetic resonance (NMR) in zero and ultra-low magnetic field (ZULF, below 0.1 $\mu$T) where detection is based on a low-cost, non-cryogenic, spin-exchange relaxation free (SERF) $^{87}$Rb atomic…

We present a system developed to premagnetize liquid samples in an ultra-low-field Nuclear Magnetic Resonance (NMR) experiment. Liquid samples of a few milliliter are exposed to a magnetic field of about 70~mT, which is abruptely switched…

仪器与探测器 · 物理学 2020-04-22 Valerio Biancalana , Roberto Cecchi , Leonardo Stiaccini , Antonio Vigilante

Zero- and ultralow-field nuclear magnetic resonance (ZULF NMR) has experienced rapid development and provides an excellent tool for diverse research fields ranging from materials science, quantum information processing to fundamental…

量子物理 · 物理学 2024-03-05 Taizhou Hong , Yuanhong Wang , Zhenhan Shao , Qing Li , Min Jiang , Xinhua Peng

Magnetic sensors are important for detecting nuclear magnetization signals in nuclear magnetic resonance (NMR). As a complementary analysis tool to conventional high-field NMR, zero- and ultralow-field (ZULF) NMR detects nuclear…

原子物理 · 物理学 2019-02-13 Min Jiang , Roman Picazo Frutos , Teng Wu , John W. Blanchard , Xinhua Peng , Dmitry Budker

X-ray absorption near-edge and grazing incidence X-ray fluorescence spectroscopy are employed to investigate the electronic structure of ZnFe$_{2}$O$_{4}$ thin films. The spectroscopy techniques are used to determine the non-equilibrium…

材料科学 · 物理学 2015-05-28 C. E. Rodríguez Torres , F. Golmar , M. Ziese , P. Esquinazi , S. P. Heluani

Element-specific spectroscopies using synchrotron-radiation can provide unique insights into materials properties. The recently developed technique of X-ray detected ferromagnetic resonance (XFMR) allows studying the magnetization dynamics…

材料科学 · 物理学 2023-05-17 Gerrit van der Laan , Thorsten Hesjedal

Access to magnetic resonance imaging (MRI) remains severely limited in low- and middle-income countries, especially in sub-Saharan Africa, despite rising rates of non-communicable diseases. Low-field MRI presents an affordable, locally…

Magnetic force microscopy (MFM) allows detection of stray magnetic fields around magnetic materials and the two-dimensional visualization of these fields. This paper presents a theoretical analysis of the oscillations of an MFM tip above a…

应用物理 · 物理学 2018-12-31 Fujio Wakaya , Kenta Oosawa , Masahiro Kajiwara , Satoshi Abo , Mikio Takai

The behavior of the so-called weak moment antiferromagnetic states, observed in the heavy-fermion superconductors UPt$_3$ and URu$_2$Si$_2$, is discussed in view of recent $\mu$SR results obtained as function of control parameters like…

强关联电子 · 物理学 2007-05-23 A. Amato , M. J. Graf , A. de Visser , H. Amitsuka , D. Andreica , A. Schenck

Ferromagnetic resonance (FMR) serves as a powerful probe of magnetization dynamics and anisotropy in percolating ferromagnets, where short-range interactions govern long-range magnetic order. We apply this approach to Ga$_{1-x}$Mn$_x$N ($x…

材料科学 · 物理学 2025-10-16 Y. K. Edathumkandy , K. Das , K. Gas , D. Sztenkiel , D. Hommel , H. Przybylińska , M. Sawicki

A novel setup for the measurement of magnetic fields external to certain antiferromagnets and generally weakly remanent magnetic materials is presented. The setup features a highly sensitive Super Conducting Quantum Interference Device…

Measurements of the $^{1}$H-NMR spectrum of a small ($\sim$ 4 $\mu$g) single crystal of the organic conductor $\lambda$-(BETS)$_{2}$FeCl$_{4}$ are reported with an applied magnetic field $\bf{B}$$_{0}$ = 9 T parallel to the a-axis in the…

强关联电子 · 物理学 2009-11-11 Guoqing Wu , P. Ranin , W. G. Clark , S. E. Brown , L. Balicas , L. K. Montgomery
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