Oscillatory surface deformation of paramagnetic rare-earth solutions driven by an inhomogeneous magnetic field

Fritzsche, Barbara; Mutschke, Gerd; Meinel, T.; Yang, Xuegeng; Lei, Zhe; Eckert, Kerstin

doi:10.1103/physreve.101.062601

Cited by 5 publications

(5 citation statements)

References 30 publications

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“…Furthermore, utilizing the proposed method allows for determination of the evaporation rate of solutions containing paramagnetic ions in a magnetic field. As reported in the literature, the presence of paramagnetic ions in the solution may cause oscillatory deformations of the solution surface, affecting, among other things, the evaporation rate …”

Section: Resultsmentioning

confidence: 94%

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A Novel Approach for Quantifying Magnetic Susceptibility of Aqueous and Organic Solutions

Wojtaszek,

Cristofolini,

Popoli

et al. 2024

J. Phys. Chem. A

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A new method for measuring the magnetic properties of aqueous and organic solutions is presented. This approach is based on quantifying the force resulting from the sample's interaction with a magnetic field. The experimental setup utilizes neodymium magnets attached to a stepper motor to adjust the distance between the magnets and the test sample, while an analytical balance serves as a strain gauge. Magnetic susceptibility measurements were performed on selected inorganic and organic solutions. A series of finite element simulations allowed us to convert experimental results to physical quantities describing magnetic susceptibilities of substances. The limit of detection (LoD) and limit of quantification (LoQ) values for the developed method of determining magnetic susceptibility were equal to 6.67• 10 −3 M and 2.02•10 −2 M, respectively.

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Section: Resultsmentioning

confidence: 94%

“…As reported in the literature, the presence of paramagnetic ions in the solution may cause oscillatory deformations of the solution surface, affecting, among other things, the evaporation rate. 90 The proposed method is perfectly suited to studying this type of effect.…”

Section: Experimental Error Analysismentioning

confidence: 99%

A Novel Approach for Quantifying Magnetic Susceptibility of Aqueous and Organic Solutions

Wojtaszek,

Cristofolini,

Popoli

et al. 2024

J. Phys. Chem. A

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“…7 − 9 After a 50 year hiatus, interest in the effects of magnetic field gradients on ionic solutions has been revived. 5 , 6 , 10 − 23 Magneto-convection only arises when the magnetic field gradient force is rotational, which necessitates a susceptibility gradient and magnetic field gradient that are non-parallel. 24 Interferometric measurements generated evidence of magnetic ion enrichment around the surface of an evaporating solution containing a single paramagnetic species.…”

Section: Introductionmentioning

confidence: 99%

“…Considering these values, a magnetic separation of ions could be deemed an Icarian endeavor. Nevertheless, attempts of rare earth ion separation in a magnetically modified Clusius-Dickel thermal diffusion column , were reported by Ida and Walter Noddack in the 1950s. − After a 50 year hiatus, interest in the effects of magnetic field gradients on ionic solutions has been revived. ,,− Magneto-convection only arises when the magnetic field gradient force is rotational, which necessitates a susceptibility gradient and magnetic field gradient that are non-parallel . Interferometric measurements generated evidence of magnetic ion enrichment around the surface of an evaporating solution containing a single paramagnetic species. − The inhomogeneity in these systems is caused by the input of thermal energy, which is the driving force for the concentration change and essentially a distillation process.…”

Section: Introductionmentioning

confidence: 99%

Neutron Imaging of Paramagnetic Ions: Electrosorption by Carbon Aerogels and Macroscopic Magnetic Forces

et al. 2021

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The electrosorption of Gd 3+ ions from an aqueous 70 mM Gd(NO 3 ) 3 solution in monolithic carbon aerogel electrodes was recorded by dynamic neutron imaging. The aerogels have a bimodal pore size distribution consisting of macropores and mesopores centered at 115 and 15 nm, respectively. After the uptake of Gd 3+ ions by the negatively charged surface of the porous structure, an inhomogeneous magnetic field was applied to the system of discharging electrodes. This led to a convective flow and confinement of Gd(NO 3 ) 3 solution in the magnetic field gradient. Thus, a way to desalt and capture paramagnetic ions from an initially homogeneous solution is established.

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“…Nevertheless, attempts of rare earth ion separation in an inhomogeneous magnetic field were reported by Ida and Walter Noddack in the 1950s [7][8][9]. After a 50 year hiatus, interest in the effects of magnetic field gradients on ionic solutions has been revived [5,6,[10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Magneto-convection only arises when the magnetic field gradient force is rotational, which necessitates a susceptibility gradient and magnetic field gradient that are orthogonal to each other [24].…”

Section: Introductionmentioning

confidence: 99%

Neutron Imaging of Paramagnetic Ions: Electrosorption by Carbon Aerogels and Macroscopic Magnetic Forces

Butcher,

Prendeville,

Rafferty

et al. 2021

Preprint

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The electrosorption of Gd 3+ ions from aqueous 70 mM Gd(NO3)3 solution in monolithic carbon aerogel electrodes was recorded by dynamic neutron imaging. The aerogels have a bimodal pore size distribution consisting of macropores centred at 115 nm and mesopores centred at 15 nm. After the uptake of Gd 3+ ions by the negatively charged surface of the porous structure, an inhomogeneous magnetic field was applied to the system of discharging electrodes. This led to a convective flow and confinement of Gd(NO3)3 solution in the magnetic field gradient. Thus, a way to desalt and capture paramagnetic ions from an initially homogeneous solution is established.

show abstract

Oscillatory surface deformation of paramagnetic rare-earth solutions driven by an inhomogeneous magnetic field

Cited by 5 publications

References 30 publications

A Novel Approach for Quantifying Magnetic Susceptibility of Aqueous and Organic Solutions

A Novel Approach for Quantifying Magnetic Susceptibility of Aqueous and Organic Solutions

Neutron Imaging of Paramagnetic Ions: Electrosorption by Carbon Aerogels and Macroscopic Magnetic Forces

Neutron Imaging of Paramagnetic Ions: Electrosorption by Carbon Aerogels and Macroscopic Magnetic Forces

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