Enhancing the energy barrier and hysteresis temperature in two benchtop-stable Ho(iii) single-ion magnets.

The energy barrier and hysteresis temperature in two benchtop-stable D-symmetry Ho single-ion magnets were significantly enhanced via the variation of the halogen anion. The coexistence of a high energy barrier of 418 K and hysteresis temperature of 15 K was observed in the bromide-ion containing Ho single-ion magnet.

Coercive Fields Above 6 T in Two Cobalt(II)-Radical Chain Compounds.

Lanthanide permanent magnets are widely used in applications ranging from nanotechnology to industrial engineering. However, limited access to the rare earths and rising costs associated with their extraction are spurring interest in the development of lanthanide-free hard magnets. Zero- and one-dimensional magnetic materials are intriguing alternatives due to their low densities, structural and chemical versatility, and the typically mild, bottom-up nature of their synthesis.

Reversible structural transformation induced switchable single-molecule magnet behavior in lanthanide metal-organic frameworks.

Switchable "on/off" single-molecule magnet (SMM) behavior can be realized in lanthanide metal-organic frameworks (Ln-MOFs) tuned by the temperature-induced change of the coordination geometry of the lanthanide centers.

In Situ Generation of NiO Nanoparticles in a Magnetic Metal-Organic Framework Exhibiting Three-Dimensional Magnetic Ordering.

NiO nanoparticles were in situ formed in a new metal-organic framework (MOF), [Ni(pyip)(HCOO)(HO)] [1; Hpyip = 5-(pyridine-4-yl)isophthalic acid], which was characterized by Fourier transform infrared spectroscopy, elemental analysis, thermogravimetric analysis, transmission electron microscopy, and powder and single-crystal X-ray diffraction. The MOF 1 shows a 3,6-connected three-dimensional rtl topology network with a topological symbol of (4.6)(4.

Constraining the coordination geometries of lanthanide centers and magnetic building blocks in frameworks: a new strategy for molecular nanomagnets.

Single-molecule magnets (SMMs) and single-chain magnets (SCMs), also known as molecular nanomagnets, are molecular species of nanoscale proportions with the potential for high information storage density and spintronics applications. Metal-organic frameworks (MOFs) are three-dimensional ordered assemblies of inorganic nodes and organic linkers, featuring structural diversity and multiple chemical and physical properties. The concept of using these frameworks as scaffolds in the study of molecular nanomagnets provides an opportunity to constrain the local coordination geometries of lanthanide centers and organize the individual magnetic building blocks (MBBs, including both transition-metal and lanthanide MBBs) into topologically well-defined arrays that represent two key factors governing the magnetic properties of molecular nanomagnets.

[Analyses of clinical features and efficacy of sudden deafness with vertigo and dizziness].

Objective: To investigate the clinical characteristics and the effect of drug treatment for sudden hearing loss with vertigo or dizziness.

Methods: In a prospective, randomized, single blinded randomized multicenter clinical study, patients with sudden deafness, ranging in age from 18 to 65 years old, with a duration less than 2 weeks, and with no any medical treatments were collected. In accordance with the hearing curve, those patients were divided into four types, i.

Noninvasive evaluation of the effect of endolymphatic sac decompression in Ménière's disease using magnetic resonance imaging.

Conclusions: This study is the first to demonstrate noninvasive evaluation of the effect of endolymphatic sac decompression (ESD) in Ménière's disease using magnetic resonance imaging (MRI).

Objective: To evaluate the effect of ESD for the treatment of Ménière's disease by applying noninvasive intratympanic gadolinium (Gd) perfusion through the eustachian tube and three-dimensional fluid-attenuated inversion MRI (3D-FLAIR MRI).

Methods: This was a prospective study.

Comparison of noninvasive evaluation of endolymphatic hydrops in Meniere's disease and endolymphatic space in healthy volunteers using magnetic resonance imaging.

Conclusions: The comparison of noninvasive standard evaluation of endolymphatic hydrops in Meniere's disease and the endolymphatic space in healthy volunteers using magnetic resonance imaging (MRI) evaluation should be carried out first.

Objective: To compare the standard evaluation of endolymphatic hydrops in Meniere's disease and the endolymphatic space in healthy volunteers in the cochlea and the vestibule in the same age group by applying noninvasive intratympanic gadolinium (Gd) perfusion through the eustachian tube and three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging (3D-FLAIR MRI).

Methods: This was a prospective study.