Sensitivity of 57Fe emission Mössbauer spectroscopy to Ar and C induced defects in ZnO

Bharuth-Ram, K.; Mølholt, T. E.; Langouche, Guido; Geburt, Sebastian; Ronning, Carsten; Doyle, T. B.; Gunnlaugsson, H. P.; Johnston, K.; Mantovan, R.; Masenda, H.; Naidoo, D.; Ncube, M.; Gíslason, H. P.; Ólafsson, S.; Weyer, G.

doi:10.1007/s10751-016-1286-5

Cited by 3 publications

(6 citation statements)

References 18 publications

(25 reference statements)

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“… 15 and Bharath-Ram et al . 70 investigated C-doped and C ion implanted ZnO system. They proposed that the C ions replace O site and results in Zn-C system.…”

Section: Resultsmentioning

confidence: 99%

Origin of magnetic properties in carbon implanted ZnO nanowires

Wang

Shao

Hsieh

et al. 2018

Sci Rep

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Various synchrotron radiation-based spectroscopic and microscopic techniques are used to elucidate the room-temperature ferromagnetism of carbon-doped ZnO-nanowires (ZnO-C:NW) via a mild C+ ion implantation method. The photoluminescence and magnetic hysteresis loops reveal that the implantation of C reduces the number of intrinsic surface defects and increases the saturated magnetization of ZnO-NW. The interstitial implanted C ions constitute the majority of defects in ZnO-C:NW as confirmed by the X-ray absorption spectroscopic studies. The X-ray magnetic circular dichroism spectra of O and C K-edge respectively indicate there is a reduction in the number of unpaired/dangling O 2p bonds in the surface region of ZnO-C:NW and the C 2p-derived states of the implanted C ions strongly affect the net spin polarization in the surface and bulk regions of ZnO-C:NW. Furthermore, these findings corroborate well with the first-principles calculations of C-implanted ZnO in surface and bulk regions, which highlight the stability of implanted C for the suppression and enhancement of the ferromagnetism of the ZnO-C:NW in the surface region and bulk phase, respectively.

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“… 15 and Bharath-Ram et al . 70 investigated C-doped and C ion implanted ZnO system. They proposed that the C ions replace O site and results in Zn-C system.…”

Section: Resultsmentioning

confidence: 99%

Origin of magnetic properties in carbon implanted ZnO nanowires

Wang

Shao

Hsieh

et al. 2018

Sci Rep

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“…It was concluded that it was a 0 2 + state and with a spherical shape as the 30 Mg ground state [48]. This means shape coexistence between spherical and deformed 0 + states in 32 Mg.…”

Section: Picking Flowers In the Nuclear Landscapementioning

confidence: 98%

“…The first target material used for production of Ar isotopes was vanadium carbide, VC, which resulted in the first observation of a T z = −2 isotope, 32 Ar [13]. By replacing the VC matrix with CaO powder an increase by a factor 1000 in the production yield was obtained [14].…”

Section: Isolde Target-ion-sources and Produced Radioactive Beamsmentioning

confidence: 99%

“…ISOLDE is specially adequate for Mössbauer spectroscopy due to the pure and intense 57 Mn beam that allows for recording thousands of Mössbauer spectra per day. Emission channelling allows the identification of the lattice location of radioactive atoms using measurements of the charged particles from the probe decay [32].…”

Section: Applications: Materials Science and Biophysicsmentioning

confidence: 99%

“…Here safe means that the experiment is performed in an energy regime and angular range such that the main excitation process is electromagnetic with a negligible nuclear contribution. With this beam it is possible to enter the island of inversion region by populating states in 32 Mg in (t p , ) reactions. The data revealed an excited state at 1058 keV excitation energy and the angular distribution was compared to DWBA calculations.…”

Section: Picking Flowers In the Nuclear Landscapementioning

confidence: 99%

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ISOLDE past, present and future

Borge

Jonson

2017

J. Phys. G: Nucl. Part. Phys.

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The idea of production of short-lived radioisotopes with the on-line technique has it roots in the early 1950s. In 1964 this became a reality when CERN approved an experiment at the 600 MeV proton synchro-cyclotron, the SC. The first experiments were performed in 1967 and since then the ISOLDE programme has gradually developed into a major undertaking. Since 1992 the ISOLDE Radioactive Beam Facility is linked to an external proton beam from the PS Booster. Today this 50 years old ‘lady’ is more vital than ever. With the successful start of HIE-ISOLDE in 2015 one may conclude that the facility is ready to face the next half century with the boost of the success and the necessary knowledge to face new challenges. In this introductory article we give an overview of the history and pick up a few examples along the nuclear chart as illustrations of the experimental achievements.

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A Review of the Current State of Magnetic Force Microscopy to Unravel the Magnetic Properties of Nanomaterials Applied in Biological Systems and Future Directions for Quantum Technologies

Winkler,

Ciria,

Ahmad

et al. 2023

Nanomaterials

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Magnetism plays a pivotal role in many biological systems. However, the intensity of the magnetic forces exerted between magnetic bodies is usually low, which demands the development of ultra-sensitivity tools for proper sensing. In this framework, magnetic force microscopy (MFM) offers excellent lateral resolution and the possibility of conducting single-molecule studies like other single-probe microscopy (SPM) techniques. This comprehensive review attempts to describe the paramount importance of magnetic forces for biological applications by highlighting MFM’s main advantages but also intrinsic limitations. While the working principles are described in depth, the article also focuses on novel micro- and nanofabrication procedures for MFM tips, which enhance the magnetic response signal of tested biomaterials compared to commercial nanoprobes. This work also depicts some relevant examples where MFM can quantitatively assess the magnetic performance of nanomaterials involved in biological systems, including magnetotactic bacteria, cryptochrome flavoproteins, and magnetic nanoparticles that can interact with animal tissues. Additionally, the most promising perspectives in this field are highlighted to make the reader aware of upcoming challenges when aiming toward quantum technologies.

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Sensitivity of 57Fe emission Mössbauer spectroscopy to Ar and C induced defects in ZnO

Cited by 3 publications

References 18 publications

Origin of magnetic properties in carbon implanted ZnO nanowires

Origin of magnetic properties in carbon implanted ZnO nanowires

ISOLDE past, present and future

A Review of the Current State of Magnetic Force Microscopy to Unravel the Magnetic Properties of Nanomaterials Applied in Biological Systems and Future Directions for Quantum Technologies

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