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Magnetochemistry, Volume 7, Issue 4

2021 April - 11 articles

Cover Story: The origin of thermotherapy is lost in the mists of time. Today, a technological challenge is to achieve local control of a tumor. In this sense, several concepts have been proposed for the improvement of hyperthermia mediated by magnetic nanoparticles, in which the heat derived from hysteresis is key for its effective clinical translation. For example, chemically synthesized exchange-coupled ferrites are said to provide efficiencies in excess of 10 kW/g. Such statements challenge us to develop a more precise understanding of the interplay between magnetism and geometry. This work compares core–shell Fe/Fe3O4 nanoparticles of cubic and spherical shapes developed using physical vapor deposition techniques. From the information available, it is probably fair to conclude that heating efficiency values reaching around 2 kW/g seem feasible, but anything above should be judged carefully. View this paper
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Articles (11)

  • Article
  • Open Access
3 Citations
3,220 Views
16 Pages

New Radical Cation Salts Based on BDH-TTP Donor: Two Stable Molecular Metals with a Magnetic [ReF6]2− Anion and a Semiconductor with a [ReO4] Anion

  • Nataliya D. Kushch,
  • Gennady V. Shilov,
  • Lev I. Buravov,
  • Eduard B. Yagubskii,
  • Vladimir N. Zverev,
  • Enric Canadell and
  • Jun-ichi Yamada

Three radical cation salts of BDH-TTP with the paramagnetic [ReF6]2− and diamagnetic [ReO4] anions have been synthesized: κ-(BDH-TTP)4ReF6 (1), κ-(BDH-TTP)4ReF6·4.8H2O (2) and pseudo-κ″-(BDH-TTP)3(ReO4)2 (3). The crystal and band structures, as well...

  • Feature Paper
  • Article
  • Open Access
6 Citations
2,576 Views
13 Pages

Multiferroic composite materials operating under the principle of strain mediation across the interfaces separating different material boundaries address many limitations of single-phase magnetoelectric materials. Although significant research has be...

  • Article
  • Open Access
142 Citations
7,088 Views
19 Pages

Tuning of Structural, Dielectric, and Electronic Properties of Cu Doped Co–Zn Ferrite Nanoparticles for Multilayer Inductor Chip Applications

  • Muhammad Hadi,
  • Khalid Mujasam Batoo,
  • Ankush Chauhan,
  • Omar M. Aldossary,
  • Ritesh Verma and
  • Yujie Yang

Herein, we report the synthesis of nanoparticles and doping of Cu-doped Co–Zn ferrites using the auto-combustion sol–gel synthesis technique. X-ray diffraction studies confirmed the single-phase structure of the samples with space group Fd3m and crys...

  • Article
  • Open Access
9 Citations
3,393 Views
12 Pages

Magnetic properties of maghemite (γ-Fe2O3) nanoparticles grown on activated multiwall carbon nanotubes have been studied by alternating current (AC) magnetic susceptibility experiments performed under different temperatures, frequencies, and applied...

  • Article
  • Open Access
3 Citations
3,367 Views
14 Pages

Magneto-Erythrocyte Membrane Vesicles’ Superior T2 MRI Contrast Agents to Magneto-Liposomes

  • Nina Kostevšek,
  • Patricija Miklavc,
  • Matic Kisovec,
  • Marjetka Podobnik,
  • Wafa Al-Jamal and
  • Igor Serša

Despite their high potential, most of the clinically approved iron oxide (IO)-based contrast agents for magnetic resonance imaging (MRI) have been withdrawn from the market either due to safety issues or lack of sales. To address this challenge, eryt...

  • Feature Paper
  • Article
  • Open Access
15 Citations
4,590 Views
16 Pages

Coexistence of Spin Canting and Metamagnetism in a One-Dimensional Mn(II) Compound Bridged by Alternating Double End-to-End and Double End-On Azido Ligands and the Analog Co(II) Compound

  • Nesrine Benamara,
  • Zouaoui Setifi,
  • Chen-I Yang,
  • Sylvain Bernès,
  • David K. Geiger,
  • Güneş Süheyla Kürkçüoğlu,
  • Fatima Setifi and
  • Jan Reedijk

Two new compounds of general formula [M(N3)2(dmbpy)] in which dmbpy = 5,5′-dimethyl-2,2′-bipyridine, and M = Mn(II) or Co(II), have been solvothermally synthesized and characterized structurally and magnetically. The structures consist of zig-zag pol...

  • Article
  • Open Access
15 Citations
4,225 Views
14 Pages

Finding the Limits of Magnetic Hyperthermia on Core-Shell Nanoparticles Fabricated by Physical Vapor Methods

  • Carlos Martinez-Boubeta,
  • Konstantinos Simeonidis,
  • Judit Oró,
  • Antonios Makridis,
  • David Serantes and
  • Lluis Balcells

Magnetic nanoparticles can generate heat when exposed to an alternating magnetic field. Their heating efficacy is governed by their magnetic properties that are in turn determined by their composition, size and morphology. Thus far, iron oxides (e.g....

  • Article
  • Open Access
36 Citations
5,234 Views
16 Pages

Gd3+ Doped CoFe2O4 Nanoparticles for Targeted Drug Delivery and Magnetic Resonance Imaging

  • Fatima Javed,
  • Muhammad Asad Abbas,
  • Muhammad Imran Asad,
  • Naveed Ahmed,
  • Nauman Naseer,
  • Hassan Saleem,
  • Abdelhamid Errachid,
  • Noureddine Lebaz,
  • Abdelhamid Elaissari and
  • Nasir M. Ahmad

Nanoparticles of CoGdxFe2 − xO4 (x = 0%, 25%, 50%) synthesized via sol–gel auto combustion technique and encapsulated within a polymer (Eudragit E100) shell containing curcumin by single emulsion solvent evaporation technique were formulated in this...

  • Article
  • Open Access
8 Citations
3,386 Views
22 Pages

Oscillatory Copper Deposition on Conical Iron Electrodes in a Nonuniform Magnetic Field

  • Giovanni Marinaro,
  • Mengyuan Huang,
  • Gerd Mutschke,
  • Xuegeng Yang and
  • Kerstin Eckert

We report the effect of a magnetic field on the deposition of copper ions on a conically shaped iron probe. In our setup, the magnetic forces and buoyancy are the key factors influencing the electrolyte flow and the mass transfer. Without external cu...

  • Article
  • Open Access
1 Citations
2,655 Views
5 Pages

Electric Field Control of Magnetic Properties by Means of Li+ Migration in FeRh Thin Film

  • Gengfei Li,
  • Yali Xie,
  • Baomin Wang,
  • Huali Yang and
  • Run-Wei Li

Recently, the electric control of magnetism by means of ion migration has been proven to be effective with nonvolatility and low energy consumption. In this work, we investigated the control of the magnetic properties of FeRh films by means of Li+ mi...

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Magnetochemistry - ISSN 2312-7481