Article
Chemistry, Multidisciplinary
Katrijn Everaert, Tilmann Sander, Rainer Koerber, Norbert Loewa, Bartel Van Waeyenberge, Jonathan Leliaert, Frank Wiekhorst
Summary: Thermal noise magnetometry (TNM) is a magnetic characterization technique that measures thermally induced fluctuations in magnetization to understand nanomagnetic structures. A tabletop setup using optically pumped magnetometers (OPMs) is proposed as a flexible alternative to the traditional superconducting quantum interference device (SQUID) setup. The OPM setup offers high sensitivity in lower frequencies, making it suitable for monitoring aggregation processes. Results show that the tabletop setup is a versatile tool for studying MNPs for various applications.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Analytical
Kun Xu, Xiuyan Ren, Yujie Xiang, Mingxu Zhang, Xiang Zhao, Kexin Ma, Yaqi Tian, Dan Wu, Ziqiang Zeng, Guobao Wang
Summary: Rubidium laser optically pumped magnetometers (OPMs) are magnetic sensors widely used for measuring magnetic fields. This research focuses on optimizing the parameters to improve the sensitivity of the magnetometer. The results show a significant increase in sensitivity, providing key technical support for the development of rubidium laser OPMs.
Article
Chemistry, Analytical
Tjerk P. Gutteling, Mathilde Bonnefond, Tommy Clausner, Sebastien Daligault, Rudy Romain, Sergey Mitryukovskiy, William Fourcault, Vincent Josselin, Matthieu Le Prado, Agustin Palacios-Laloy, Etienne Labyt, Julien Jung, Denis Schwartz
Summary: MagnetoEncephaloGraphy (MEG) measures electrical activity in the brain at a millisecond time scale. The conventional system uses low temperatures but the emerging OPM technology allows for measurements at room temperature with a larger dynamic range and frequency bandwidth. The study compared five He-4-OPMs to a classical SQUID-MEG system and found that despite lower sensitivity, the He-4-OPMs provided similar results due to their close proximity to the brain.
Article
Physics, Applied
Ke Yang, Jixi Lu, Zixuan Wang, Bowen Sun, Yanning Ma, Yaoguo Wang, Bangcheng Han
Summary: This study proposes an improved demagnetization scheme for low-noise magnetic shields, which allows for lower residual magnetic field and gradient. The scheme can increase the sensitivity of spin-exchange-relaxation-free atomic magnetometers and facilitate the application of low-noise magnetic shields in various fields such as low-field nuclear magnetic resonance detection and atomic gyroscope.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Yuan-Tian Lu, Lei-Song Liu, Yong-Qi Shi, Tian Zhao, Wan-Hua Zhu, Tie-Fu Zhang, Wu-Ming Liu, Xiao-Juan Zhang
Summary: A high-sensitivity self-oscillating cesium atomic magnetometer with a wide operating temperature range has been developed based on a low-noise cesium spectral lamp, addressing issues with current sensors such as limited temperature range and challenging low-temperature startup. The magnetometer's stability and operating temperature range are improved by using a temperature feedback mechanism to make adjustments to fluctuations in the excitation source of the cesium lamp in real time.
APPLIED SCIENCES-BASEL
(2023)
Article
Optics
Siran Li, Danyue Ma, Kun Wang, Yanan Gao, Bozheng Xing, Xiujie Fang, Bangcheng Han, Wei Quan
Summary: In this study, a high sensitivity Rb optically pumped magnetometer based on electron paramagnetic resonance is demonstrated. Acousto-optic modulation based on balanced detection is used to suppress the probe noises and improve the sensitivity. The results show a simultaneous dual-axis transverse measurement with a sensitivity of 30 fT/Hz(1/2) in a 200Hz bandwidth and a 250nT linear working range.
Article
Chemistry, Analytical
Antonio Vettoliere, Carmine Granata
Summary: In this article, experimental results are presented on fully integrated superconducting quantum interference devices (SQUID), which include a circuit for tuning and optimizing the main sensor device characteristics. It is shown that the critical current of a SQUID magnetometer in liquid helium can be modified using a suitable heating circuit. This allows for the improvement of SQUID sensor characteristics, such as the voltage-magnetic flux characteristic, responsivity, as well as flux and magnetic field noise. Additionally, the SQUID sensor can be reset in case of magnetic flux entrapment without removing it from the helium bath. These findings are valuable for optimizing and resetting magnetic sensors in large multichannel systems.
Article
Optics
Yeguang Yan, Jixi Lu, Shaowen Zhang, Fei Lu, Kaifeng Yin, Kun Wang, Binquan Zhou, Gang Liu
Summary: A high-sensitivity three-axis closed-loop optically pumped magnetometer is proposed, which has wide application prospects.
Article
Physics, Applied
Yintao Ma, Zhixia Qiao, Mingzhi Yu, Yanbin Wang, Yao Chen, Guoxi Luo, Ping Yang, Qijing Lin, Libo Zhao, Yun Zhang, Junjie Sun, Guangzhao Qin, Zhuangde Jiang
Summary: This study presents an ingenious approach to achieve high signal enhancement and relatively homogeneous spin polarization using optical pumping in a hybrid atomic magnetometer. Experimental results demonstrate the effectiveness of this method and suggest potential applications in highly sensitive and chip-scale magnetic field detection.
APPLIED PHYSICS LETTERS
(2022)
Article
Multidisciplinary Sciences
Asieh Soheilian, Mohammad Mehdi Tehranchi, Maliheh Ranjbaran
Summary: Abrupt changes in the instantaneous velocity of magnetic tracers affect the width of the signal detected by magnetometer, while the position of the tracer can be identified by observing the shrinkage behavior of the signal. This information can be utilized for high sensitivity diagnosis of arterial stenosis.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Electrical & Electronic
Yi Ruan, Xiang He, Limeng Ruan, Fan Liu, Zhiwen Zhang, Jiaqi Weng, Qinying Yan, Guoyi Zhang, Kan Li, Wenqiang Zheng, Qiang Lin
Summary: A novel drug monitoring method is demonstrated using an optically pumped atomic magnetometer. The method quantifies the concentration of superparamagnetic nanoparticles in solutions through magnetorelaxometry measurement. The study also monitors drug-conjugated magnetic nanoparticles in mice to investigate drug sustained-release mechanism.
IEEE PHOTONICS JOURNAL
(2022)
Review
Physics, Applied
R. Stolz, M. Schmelz, V Zakosarenko, C. Foley, K. Tanabe, X. Xie, R. L. Fagaly
Summary: Since the invention of superconducting quantum interference devices (SQUIDs) over 50 years ago, their application in geosciences has significantly improved, making them better suited, more sensitive, and reliable for various geophysical measurements. SQUIDs have been widely used in magnetic property studies, mineral exploration, and geological surveys, showcasing their effectiveness and adaptability in the field.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Zhi Liu, Chen Zhang, Heng Yuan, Kaifeng Yin, Yang Yang, Yeguang Yan, Yaxiang Wang, Binquan Zhou, Xiaolin Ning, Bangcheng Han
Summary: A non-magnetic heating film based on indium tin oxide (ITO) was proposed and applied in a miniaturized magnetometer, improving sensitivity and stability. The film allows for a more uniform temperature field and reduced magnetic noise, making it suitable for various atomic devices.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Jake D. Zipfel, Srikant Santosh, Patrick Bevington, Witold Chalupczak
Summary: The proof of principle of object composition identification based on inductive measurements with an atomic magnetometer has been demonstrated in laboratory conditions. The problem of material identification in the context of measurements performed with variable distance between the object and the primary radio-frequency field source and sensor is discussed, along with possible solutions.
APPLIED SCIENCES-BASEL
(2022)
Article
Instruments & Instrumentation
Xinyu Wu, Jianshe Liu, Wei Chen
Summary: This paper proposes a SQUID readout circuit with tunable feedback polarity, which enhances the performance of SQUID by integrating feedback circuits and superconducting switches to achieve the switching of feedback polarity. Additionally, a two-stage scheme is introduced to address the degraded noise performance caused by negative feedback.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2023)
Article
Medicine, Legal
Nicole R. Jackson, Karen Zeigler, Mary Torrez, Yohsuke Makino, Natalie L. Adolphi, Sarah Lathrop, Lauren Decker, Lauren Dvorscak, Lori Proe, Ian D. Paul, Ross Zumwalt, Heather Jarrell
Summary: The majority of literature on COVID-19 pathology comes from clinical cohorts or autopsy findings, with the New Mexico Office of the Medical Investigator conducting full autopsies revealing diffuse alveolar damage in every COVID-19 death.
AMERICAN JOURNAL OF FORENSIC MEDICINE AND PATHOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Jacob I. Deneff, Kimberly S. Butler, Lauren E. S. Rohwer, Charles J. Pearce, Nichole R. Valdez, Mark A. Rodriguez, Ting S. Luk, Dorina F. Sava Gallis
Summary: This study presents a design strategy to encode multilayer complexity in a family of heterometallic rare-earth metal-organic frameworks, achieving overt and covert properties and validating tag authentication. It demonstrates the impact of subtle compositional changes on photophysical properties. This strategy can be widely used to create a large library of highly complex and difficult-to-counterfeit optical tags.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Emergency Medicine
Tatsuya Norii, Yohsuke Makino, Kana Unuma, Gary M. Hatch, Natalie L. Adolphi, Sarah Dallo, Danielle Albright, David P. Sklar, Darren Braude
Summary: The study aimed to establish a classification system for extraglottic airway device misplacement and describe its frequency in decedents with the device in situ. Results showed that misplacement occurred in over 14% of cases, with a small percentage resulting in severe traumatic complications.
ANNALS OF EMERGENCY MEDICINE
(2021)
Article
Nanoscience & Nanotechnology
Jacob Deneff, Kimberly S. Butler, Paul G. Kotula, Braden E. Rue, Dorina F. Sava Gallis
Summary: Zeolitic imidazolate framework (ZIF) nanoparticles have emerged as attractive platforms for various biologically relevant applications due to their facile synthesis, tailorable porosity, diverse compositions, and low toxicity. This study demonstrates the rapid synthesis and size tunability of ZIF-20 particles, their stability in biologically relevant media, biocompatibility with A549 human epithelial cells, and ability to encapsulate and release methylene blue. ZIF-20 NPs display unique behavior based on their specific structural and chemical features, highlighting the importance of expanding the design space within the broader ZIFs family for a wider range of relevant properties in biological applications and beyond.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Jacob Deneff, Lauren E. S. Rohwer, Kimberly S. Butler, Nichole R. Valdez, Mark A. Rodriguez, Ting S. Luk, Dorina F. Sava Gallis
Summary: Optical anticounterfeiting tags utilize the photoluminescent properties of materials to encode unique patterns for identification and validation. Metal-organic frameworks (MOFs) based on polynuclear rare earth clusters are ideal materials for this purpose due to their fine control over structure and composition. In this study, we designed and synthesized heterometallic MOFs using Eu, Nd, and Yb with a specific linker. The resulting optical tags have multiple covert elements, with invisible emissions from Eu and infrared emissions from Nd and Yb. We also discovered a previously unobserved 11-metal cluster correlated with the presence of Yb in the MOFs. These materials demonstrate great potential as intricate optical tags and highlight the importance of linker selection in controlling their photoluminescent properties.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Dorina F. Sava Gallis, Kimberly S. Butler, Charles J. Pearce, Nichole Valdez, Mark A. Rodriguez
Summary: This study presents a rapid and facile design strategy to create a highly complex optical tag with programmable, multimodal photoluminescent properties using intrinsic and DNA-fluorophore hidden signatures. A novel heterometallic near-infrared (NIR)-emitting metal-organic framework (MOF) was designed and synthesized as the first covert feature of the tag. The NIR-emissive MOF was post-synthetically modified via a fluorescent DNA oligo labeling design strategy to achieve controlled, multimodal, and tailorable emission with difficult to counterfeit features.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Anatomy & Morphology
Gina Bertocci, Nathan P. Brown, Angela Thompson, Karen Bertocci, Natalie L. Adolphi, Lauren Dvorscak, Mary Clyde Pierce
Summary: The study aimed to characterize the femur morphology in healthy infants and young children. Measures such as femur length, trochanter width, minimum diaphysis diameter, and growth plate width increased with age and weight. Structural properties associated with fracture resistance also increased with age and weight.
Article
Multidisciplinary Sciences
Matthew P. Hirakawa, Nikki Tjahjono, Yooli K. Light, Aleyna N. Celebi, Nisa N. Celebi, Prem Chintalapudi, Kimberly S. Butler, Steven S. Branda, Raga Krishnakumar
Summary: This study compared MSCs from different genetic backgrounds and found differences in antibacterial properties. It demonstrated that overexpression of CD14 can enhance the responsiveness of MSCs to bacterial challenge.
Article
Chemistry, Analytical
Joonas Iivanainen, Amir Borna, Rasmus Zetter, Tony R. Carter, Julia M. Stephen, Jim McKay, Lauri Parkkonen, Samu Taulu, Peter D. D. Schwindt
Summary: This paper proposes a method for calibrating and localizing magnetic field sensors using electromagnetic coils. The method is applied to optically pumped magnetometers in magnetoencephalography. By measuring the coil fields, modeling them, and minimizing the errors, the sensor parameters can be obtained. Experimental results confirm the feasibility of this method.
Article
Multidisciplinary Sciences
Kimberly S. Butler, Bryan D. Carson, Joshua D. Podlevsky, Cathryn M. Mayes, Jessica M. Rowland, DeAnna Campbell, J. Bryce Ricken, George Wudiri, Jerilyn A. Timlin
Summary: For workplaces where remote work is not possible, routine occupational SARS-CoV-2 diagnostic testing is crucial. A flexible testing method was developed to provide rapid results for symptomatic and asymptomatic individuals with high-risk exposures or without preexisting conditions. By incorporating sample pooling and amplicon target multiplexing, the testing throughput was increased while maintaining reasonable sensitivity.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Kimberly S. Butler, C. Jeffrey Brinker, Hon Sing Leong
Summary: The avian embryo and chorioallantoic membrane (CAM) model provides a valuable in vivo preclinical platform for evaluating the behavior and performance of nanoparticles. It allows for the study of nanoparticle stability, distribution, and interactions at a cellular level, and can be used to accelerate the development of nanoparticle delivery and imaging agents.
Article
Multidisciplinary Sciences
Jacob I. Deneff, Lauren E. S. Rohwer, Kimberly S. Butler, Bryan Kaehr, Dayton J. Vogel, Ting S. Luk, Raphael A. Reyes, Alvaro A. Cruz-Cabrera, James E. Martin, Dorina F. Sava Gallis
Summary: We demonstrate a design strategy for multiplexed, lifetime-encoded tags using intermetallic energy transfer in rare-earth metal-organic frameworks. This study reveals true orthogonality in encoding using independently variable lifetime and composition, highlighting the utility of this design strategy.
NATURE COMMUNICATIONS
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Chris Knorr, Natalie L. Adolphi, Kurt B. Nolte
Summary: The successful integration of next-generation imaging technologies into death investigation practice requires careful physical incorporation into autopsy laboratories, analysis of decedent and personnel movement, consideration of equipment installation and safety requirements, and collaboration between design professionals and death investigative personnel to optimize functionality, efficiency, and safety.
Review
Radiology, Nuclear Medicine & Medical Imaging
Tatsuya Norii, Yohsuke Makino, Kana Unuma, Natalie L. Adolphi, Danielle Albright, David P. Sklar, Cameron Crandall, Darren Braude
Summary: Extraglottic airway devices (EGDs), like laryngeal mask airways, are less definitive ventilation conduits compared to cuffed endotracheal tubes and may require exchange prior to obtaining CT images. Proper identification and correct placement of EGDs are critical to provide feedback to clinicians and prevent medicolegal issues.
EMERGENCY RADIOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Dorina F. Sava Gallis, Kimberly S. Butler, Charles J. Pearce, Nichole Valdez, Mark A. Rodriguez
Summary: This article introduces a design strategy for creating highly complex optical tags using DNA-fluorophore hidden signatures and near-infrared emissive mesoporous metal-organic frameworks, allowing for controlled, multimodal emission with difficult to counterfeit features. It demonstrates important covert elements and innovative technology.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Bibhutibhusan Nayak, S. Narayana Jammalamadaka
Summary: This article presents a method for remote detection of bovine serum albumin (BSA) using modified cantilever beam magnetometry (CBM). By combining a magnetostrictive Fe70Ga30 cantilever with optical detection technique, researchers were able to detect high concentrations of BSA remotely. The results of this study demonstrate the potential of this method in estimating the magnetostriction of thin films.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yu Hao, R. E. Camley, Z. Celinski
Summary: Magnetic particles have various applications and their magnetic state is determined by their size and the strength of an applied magnetic field. Numerical simulations were performed to study the effect of an applied field on the critical size of single-domain magnetic particles, and the critical field at which a particle becomes single-domain was determined.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Nitesh Singh, Naresh Kumar, Dharohar Sahadot, Anil Annadi, Vidyadhar Singh, Murtaza Bohra
Summary: The unique magnetic properties of FM/AFM and hard-FM/soft-FM nanocomposite thin films have significant relevance for numerous applications. The composition and performance of different magnetic phases in the nanocomposite films can be significantly affected by the laser ablation conditions and annealing temperature.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alya Ali Musaed, Samir Salem Al-Bawri, Khaled Aljaloud, Wazie M. Abdulkawi, Mohammad Tariqul Islam, Mandeep Jit Singh, Zaini Sakawi, Husam Hamid Ibrahim
Summary: This research presents a wideband tunable metamaterial for body-centric applications in the millimeter-wave frequency band. The proposed metamaterial has a wide operating frequency range and enhanced gain, making it suitable for improving the antenna performance in 5G wireless communication systems.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Binod K. Rai, Boris Maiorov, Krzysztof Gofryk, Patrick O'Rourke, Catherine Housley, Henry Ajo, Asraf Sawon, Arjun K. Pathak, Narayan Poudel, Qiang Zhang, Travis J. Williams, Matthias Frontzek
Summary: This manuscript reports on the structural and magnetic properties of NdCuGa3. The study confirmed the crystal structure and magnetic phase transition of NdCuGa3 using XRD, neutron diffraction, magnetization, and specific heat measurements. The neutron diffraction data further confirmed the antiferromagnetic phase of NdCuGa3.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Haonan Li, Cong Li, Hailiang Huang, Guodong Hao, Fei Wang
Summary: The electronic structure and ferroelectric-ferromagnetic coupling properties of Y-doped and vacancy-containing GaN-ZnO heterojunctions are systematically investigated. The magnetism in vacancy-containing systems is generated by the spin polarization of unpaired electrons induced by cationic vacancies, while in Y-doped systems, bound magnetic polarons are formed by the orbital hybridization of s-state and d-state electrons of Y-doped elements.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Muhammad Ijaz, Hafeez Ullah, Bandar Ali Al-Asbahi, Mati Ullah Khan, Zaheer Abbas, Sana Ullah Asif
Summary: M-type BaFe11.4-xAlxCo0.6O19 hexaferrites with Al3+ substitutions were synthesized using the co-precipitation method followed by Sonochemical process. The synthesized materials were characterized using XRD, FTIR, UV-vis spectroscopy, VSM, SEM, and LCR meter. The results showed that aluminum doping decreased the band gap and enhanced the magnetic and dielectric properties of the hexaferrites, making them suitable for various applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg I. Utesov
Summary: The elementary excitations spectrum of anisotropic frustrated antiferromagnets in the fan phase is discussed. It is found that the low-energy part of the spectrum consists of a gapless phason branch with linear dispersion and a gapped optical branch corresponding to the fan structure amplitude oscillations. In the high-energy part of the spectrum, the excitations are similar to the magnons of the fully polarized phase.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Alexander Ya. Simonovskii, Alexander A. Yanovskii, Arthur R. Zakinyan
Summary: In this study, the departure frequency of vapor bubbles during boiling of ferrofluid in a horizontal magnetic field is experimentally investigated. Two methods, visual and inductive, are used to measure the frequency of bubble departure. The results show that the bubble departure frequency can decrease with increasing magnetic field strength and increase with increasing temperature of the heat-emitting surface. A linear stability analysis is conducted to analyze the influence of the magnetic field on the frequency of bubble formation during ferrofluid boiling.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Oleg Heczko, Michal Rames, Vit Kopecky, Petr Vertat, Michal Varga, Ladislav Straka
Summary: Heusler Ni-Mn-Ga alloys are multiferroic materials that exhibit magnetic shape memory (MSM) phenomena. By doping transition elements into Ni2MnGa alloys, the transformation temperatures can be modified and complex behaviors can be observed, such as the variation in saturation magnetization and the effects of elemental substitution on compound properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Carlos Ariel Samudio Perez, Ariel Flaig de Marchi
Summary: This study investigates the electronic and magnetic properties of the Full-Heusler Fe2MnAs alloy using first-principles calculations. The alloy may form spontaneously and exhibits a ferromagnetic order and high spin-polarization. It can be transformed into a half-metal by contracting the lattice constant. Additionally, certain defects contribute to the spin-polarization of the alloy, making it a fully half-metallic material.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Satish Geeri, Aditya Kolakoti, Prasadarao Bobbili
Summary: In this study, an electromagnetic wave-absorbing material was fabricated using a polymer composite material with fiber orientation and Multiwall Carbon Nanotubes as filler materials, along with a Perfect Electric Conducting material. The experiments demonstrated strong electromagnetic absorbing properties for the composites with PEC-coated and non-PEC-coated materials. Mechanical, thermal, and morphological analysis confirmed the similar trend in properties. CRITIC analysis helped identify the sequence order of sustaining properties for the fabricated composites.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Yankai Chen, Ruoxue Zhang, Yukai An
Summary: The piezoelectricity, valley character, and magnetic properties of 2H-VS2 monolayer were studied, revealing its potential applications in spintronics and valleytronics due to its bipolar magnetic semiconductor characteristics and superior physical properties.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Leonardo S. Lima
Summary: This study investigates the thermodynamic quantities, such as entropy, specific heat, and magnetic susceptibility, in the next-nearest-neighbors Heisenberg model on a honeycomb-kagome lattice. The linear spin-wave approach is applied to obtain the temperature-dependent behavior of these quantities. Additionally, the entanglement negativity, a quantifier of quantum entanglement, and the spin Hall conductivity are also studied. The results show that all the thermodynamic quantities, as well as the entanglement negativity and spin Hall conductivity, exhibit an increasing trend with temperature. Furthermore, it is found that all the analyzed quantities approach zero in the low-temperature limit, consistent with experimental observations.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zhaoxing Wang, Maximilian Kai Reimann, Wang Chen, Yikun Zhang, Rainer Poettgen
Summary: The Mo2FeB2-type compounds RE2Ga2Mg (RE = Tm, Er, Ho) exhibit a large magnetocaloric effect, making them promising for cryogenic magnetic cooling applications.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2024)
