Pressure-tuning of the photomagnetic response of heterostructured CoFe@CrCr-PBA core@shell nanoparticles

Peprah, Marcus K.; VanGennep, Derrick; Quintero, Pedro A.; Risset, Oliva N.; Brinzari, T. V.; Li, Carissa H.; Dumont, Matthieu; Xia, Jicheng; Hamlin, J. J.; Talham, Daniel R.; Meisel, Mark W.

doi:10.1016/j.poly.2016.11.046

Cited by 10 publications

(8 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The effect of pressure on the Curie temperatures of the CoFe-PBs core (≈25 K) and the CrCr-PBs shell (≈200 K) together with a change of the relaxation temperature of the photo-CTIST (charge-transfer-induced spin-transition) of the CoFe-PBs core (≈125 K) were alike to the operation already presented for the single-phase materials. Specifically, although the magnetic ordering temperature of the CrCr-PBs shell shifts to higher temperatures, the relaxation temperature of the photo-CTIST of the CoFe-PBs core goes down to lower temperatures when the pressure was enlarged, thereby lowering the temperature range in which the CrCr-PBs component is photo switchable [62].…”

Section: Magnetic Properties Of Magnetic Nanoparticlesmentioning

confidence: 99%

The Effect of Pressure on Magnetic Properties of Prussian Blue Analogues

Zentková

Mihalik

2019

Crystals

View full text Add to dashboard Cite

We present the review of pressure effect on the crystal structure and magnetic properties of Cr(CN)6-based Prussian blue analogues (PBs). The lattice volume of the fcc crystal structure space group Fm 3 ¯ m in the Mn-Cr-CN-PBs linearly decreases for p ≤ 1.7 GPa, the change of lattice size levels off at 3.2 GPa, and above 4.2 GPa an amorphous-like structure appears. The crystal structure recovers after removal of pressure as high as 4.5 GPa. The effect of pressure on magnetic properties follows the non-monotonous pressure dependence of the crystal lattice. The amorphous like structure is accompanied with reduction of the Curie temperature (TC) to zero and a corresponding collapse of the ferrimagnetic moment at 10 GPa. The cell volume of Ni-Cr-CN-PBs decreases linearly and is isotropic in the range of 0–3.1 GPa. The Raman spectra can indicate a weak linkage isomerisation induced by pressure. The Curie temperature in Mn2+-CrIII-PBs and Cr2+-CrIII-PBs with dominant antiferromagnetic super-exchange interaction increases with pressure in comparison with decrease of TC in Ni2+-CrIII-PBs and Co2+-CrIII-PBs ferromagnets. TC increases with increasing pressure for ferrimagnetic systems due to the strengthening of magnetic interaction because pressure, which enlarges the monoelectronic overlap integral S and energy gap ∆ between the mixed molecular orbitals. The reduction of bonding angles between magnetic ions connected by the CN group leads to a small decrease of magnetic coupling. Such a reduction can be expected on both compounds with ferromagnetic and ferrimagnetic ordering. In the second case this effect is masked by the increase of coupling caused by the enlarged overlap between magnetic orbitals. In the case of mixed ferro–ferromagnetic systems, pressure affects μ(T) by a different method in Mn2+–N≡C–CrIII subsystem and CrIII–C≡N–Ni2+ subsystem, and as a consequence Tcomp decreases when the pressure is applied. The pressure changes magnetization processes in both systems, but we expect that spontaneous magnetization is not affected in Mn2+-CrIII-PBs, Ni2+-CrIII-PBs, and Co2+-CrIII-PBs. Pressure-induced magnetic hardening is attributed to a change in magneto-crystalline anisotropy induced by pressure. The applied pressure reduces saturated magnetization of Cr2+-CrIII-PBs. The applied pressure p = 0.84 GPa induces high spin–low spin transition of cca 4.5% of high spin Cr2+. The pressure effect on magnetic properties of PBs nano powders and core–shell heterostructures follows tendencies known from bulk parent PBs.

show abstract

Section: Magnetic Properties Of Magnetic Nanoparticlesmentioning

confidence: 99%

The Effect of Pressure on Magnetic Properties of Prussian Blue Analogues

Zentková

Mihalik

2019

Crystals

View full text Add to dashboard Cite

show abstract

“…[149] In this line of thought, an important effort has been achieved in the design of PB(A)s@PB(A)s core@shell nanoparticles and numerous examples of nano-objects of this type with different sizes and compositions of the core and the shell have been reported. [149], [150], [151], [152], [153], [154], [155], [156], [157], [158], [159], [160], [161], [162], [163] However, in certain conditions, the requirements of the lattice compatibility between the core and the shell can be less strict. For example, pathways for plastic strain relaxation may be available when the secondary material deposition proceeds non-epitaxially, developing a polycrystalline or even partially amorphous shell.…”

Section: Design and Typology Of Nanoheterostructures Involving Nanosi...mentioning

confidence: 99%

Nanoheterostructures based on nanosized Prussian blue and its Analogues: Design, properties and applications

Guari

Cahu

Félix

et al. 2022

Coordination Chemistry Reviews

View full text Add to dashboard Cite

“…The monitoring of structural modifications under high pressure for molecular systems, thanks to the advances in pressure cell technology, [17] is one of the major recent advances that allows magneto‐structural correlations. High pressure was already used to induce polymerization, [18] color change [19] and solvation/desolvation, [20] to switch molecular conductivity, [21] spin‐crossover behavior, [22] magnetic ordering temperature for organic [23] and coordination complexes [24] or even to tune the photomagnetic response [25] . Among these pressure‐induced magnetic behaviors, the spin crossover phenomenon was undoubtedly the most studied and has called upon a plethora of under‐pressure characterization techniques.…”

Section: Introductionmentioning

confidence: 99%

Pressure‐Induced Structural, Optical and Magnetic Modifications in Lanthanide Single‐Molecule Magnets

Pointillart,

Le Guennic,

Cador

2024

Chemistry A European J

View full text Add to dashboard Cite

Lanthanide Single‐Molecule Magnets are fascinating objects that break magnetic performance records with observable magnetic bistability at the boiling temperature of liquid nitrogen, paving the way for potential applications in high‐density data storage. The switching of lanthanide SMM has been successfully achieved using several external stimuli such as redox reaction, pH titration, light irradiation or solvation/desolvation thanks to the high sensitivity of the magnetic anisotropy to any structural change in the lanthanide surrounding. Nevertheless, the use of applied high pressure as an external stimulus is largely underused, especially considering that it can be combined with high pressure X‐ray diffraction to establish a complementary structure‐property relationship. This Concept article summarizes the few relevant examples of investigations of lanthanide SMMs under applied high pressure, provides conclusions on the effect of such stimulus on molecular structures and magnetic anisotropy, and finally draws perspective on the future development of magnetic measurements under applied pressure.

show abstract

Pressure-tuning of the photomagnetic response of heterostructured CoFe@CrCr-PBA core@shell nanoparticles

Abstract: 2017-08-30T02:06:29

Cited by 10 publications

References 40 publications

The Effect of Pressure on Magnetic Properties of Prussian Blue Analogues

The Effect of Pressure on Magnetic Properties of Prussian Blue Analogues

Nanoheterostructures based on nanosized Prussian blue and its Analogues: Design, properties and applications

Pressure‐Induced Structural, Optical and Magnetic Modifications in Lanthanide Single‐Molecule Magnets

Contact Info

Product

Resources

About