Synthesis, structural and magnetic characterization of iron-zinc-borate glass ceramics containing nanocrystalline zinc ferrite

Păşcuţă, Petru; Vlădescu, A.; Borodi, Gheorghe; Culea, E.; Tetean, R.

doi:10.1007/s10854-011-0444-4

Cited by 9 publications

(3 citation statements)

References 48 publications

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“…Magnetic properties of the borate glass–ceramics consisting of Fe 2 O 3 and ZnO were investigated by Pascuta et al. [ 105 ]. Glass–ceramics containing 15 mol% Fe 2 O 3 exhibited ferromagnetic interactions along with superparamagnetic contribution.…”

Section: Structure–property Relationshipmentioning

confidence: 99%

Bioactive glasses and glass–ceramics for hyperthermia treatment of cancer: state-of-art, challenges, and future perspectives

Danewalia

2021

Materials Today Bio

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Bioactive glasses and glass-ceramics are well-proven potential biomaterials for bone-tissue engineering applications because of their compositional flexibility. Many research groups have been focused to explore the utility of bioactive glass–ceramics beyond bone engineering to hyperthermia treatment of cancer. Hyperthermia refers to raising the temperature of tumor close to 44°C at which malignant cells perish with negligible harm to normal cells. Hyperthermia can be employed by many means such as by ultrasonic waves, electromagnetic waves, infrared radiations, alternating magnetic fields, etc. Magnetic bioactive glass–ceramics are advantageous over other potential candidates for thermoseeds such as nanofluids, superparamagnetic nanoparticles because they can bond not only to the natural bone but also with soft tissues in few cases, which helps regenerating the affected part due to its bioactive nature. Strict restrictions on clinical settings ( < ) force the research activities to be more focused on material characteristics to raise the implant temperature to required ranges. Lots of efforts have been made in past years to tackle these challenges and design best-suited glass–ceramics for hyperthermia treatment. This review aims to provide essential information on the concept of hyperthermia treatment of cancer and recent developments in the field of bioactive glass–ceramics for cancer treatment. The advantages and disadvantages of magnetic glass–ceramics over other potential thermoseed materials are highlighted. In this field, the major challenges are to develop magnetic glasses, which have fast and bulk crystallization with optimized magnetic phases with lower Curie and Neel temperatures.

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Section: Structure–property Relationshipmentioning

confidence: 99%

Bioactive glasses and glass–ceramics for hyperthermia treatment of cancer: state-of-art, challenges, and future perspectives

Danewalia

2021

Materials Today Bio

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“…Typically, uniform crystal orientation is not thermodynamically favorable, and therefore an external stimulus (i.e., electric field and magnetic field) must be applied to lower the Gibbs free energy of the system to obtain a preferred crystal growth orientation (Figure 13). 45 While magnetic fields have not been used to induce crystal orientation in glass‐ceramics, they have been used to crystallize glass‐ceramic systems to demonstrate superconductivity 134‐136 . High magnetic fields (~10 T) drive crystal orientation through paramagnetic anisotropy among crystallographic axes, such that the axis with the largest magnetic susceptibility aligns parallel to the applied magnetic field 137 .…”

Section: Preparation Of Glass‐ceramicsmentioning

confidence: 99%

“…45 While magnetic fields have not been used to induce crystal orientation in glassceramics, they have been used to crystallize glass-ceramic systems to demonstrate superconductivity. [134][135][136] High magnetic fields (~10 T) drive crystal orientation through paramagnetic anisotropy among crystallographic axes, such that the axis with the largest magnetic susceptibility aligns parallel to the applied magnetic field. 137 This means that orientation by magnetic fields is only possible if the crystals have magnetic anisotropy.…”

Section: Orientation By Magnetic Fieldmentioning

confidence: 99%

Piezoelectric glass‐ceramics: Crystal chemistry, orientation mechanisms, and emerging applications

2021

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Piezoelectric materials have coupled mechanical and electrical energies and have long been used in devices for actuators, sensors, energy harvesters, frequency filters, and various additional applications. Piezoelectricity requires a non‐centrosymmetric crystal structure and is therefore confined to materials that possess a periodic crystalline structure. Due to the non‐crystalline nature of glass, piezoelectricity is fundamentally forbidden. However, one way to exploit piezoelectric properties in a glassy matrix is by developing glass‐ceramics that possess controlled growth of a crystalline phase. Growth and orientation of piezoelectric crystals in a glassy matrix is a non‐trivial process that has long been explored to combine the formability of glass with the thermal and mechanical resilience of glass‐ceramics. While extensive work has been done in the field of functional glass‐ceramics, the results are presented in isolated articles and a comprehensive review pertaining to symmetry breaking methods to exploit anisotropic properties in glass‐ceramics has been absent from the literature. Here, we present a global review of the fundamental symmetry requirements for piezoelectricity, the development of polar, piezoelectric glass‐ceramic compositions (specifically those with LiNbO3 and fresnoite‐based crystal phases), and various crystal growth and orientation mechanisms, including relevant kinetic and thermodynamic driving forces. Lastly, we discuss the challenges associated with implementing gradients to drive oriented crystal growth to develop non‐centrosymmetry, and the need for future modeling work to produce adequate time‐temperature‐transformation (TTT) diagrams that take into account kinetic and thermodynamic driving forces for oriented crystal growth. Going beyond technical challenges, we conclude with an examination of current and potential applications for piezoelectric glass‐ceramics that combine the formability of glass with the symmetry‐dependent properties of ceramics.

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2015

Nano-Glass Ceramics

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Synthesis, structural and magnetic characterization of iron-zinc-borate glass ceramics containing nanocrystalline zinc ferrite

Cited by 9 publications

References 48 publications

Bioactive glasses and glass–ceramics for hyperthermia treatment of cancer: state-of-art, challenges, and future perspectives

Bioactive glasses and glass–ceramics for hyperthermia treatment of cancer: state-of-art, challenges, and future perspectives

Piezoelectric glass‐ceramics: Crystal chemistry, orientation mechanisms, and emerging applications

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