Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material

Vasić, Borislav; Gajić, Radoš; Milošević, Ivana; Medic, Z.; Blagojev, Marina; Opačić, Marko; Kremenović, Aleksandar; Lazić, Dejan

doi:10.1016/j.apsusc.2022.155114

Cited by 3 publications

(8 citation statements)

References 57 publications

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“…Several experimental techniques are used to verify that exfoliated LMs were not structurally damaged when compared to the parent bulk material. 21,22,31,35,40 Mechanical exfoliation has been successfully applied to a variety of phyllosilicates, such as biotite, 37,40 serpentine, 31 phlogopite, 20 clinochlore, 27 talc [23][24][25][26][41][42][43] , muscovite, [44][45][46][47][48] and others, 17,37 reaching stable single or FL-flakes onto different substrates. Thus, we foresee that novel vertical vdWHs will be made by…”

Section: A Mechanical Exfoliation and Van Der Waals Heterostructuresmentioning

confidence: 99%

“…For example, Figs. 2(a)-(b) demonstrate the electrical strength of pyrophyllite 33 and muscovite 144 in their ultrathin limit, respectively. Similar experiments have been also performed in other phyllosilicates.…”

Section: Electronic and Optoelectronic Applicationsmentioning

confidence: 99%

“…[17][18][19] Phyllosilicate minerals are wide bandgap insulators, stable in different environments, and abundant in nature. [17][18][19][20][21][22][23][24][25][26][27] They present a layered structure that enables their exfoliation down to 1L. 20,23,28,29 The variety of phyllosilicate specimens arises from ionic substitutions with different geometric arrangements of atoms within the crystal.…”

Section: Introductionmentioning

confidence: 99%

“…31,32 Phyllosilicates with 2:1 arrangement present a compact structure with pyrophyllite and talc as standard specimens with dioctahedral and trioctahedral layers, respectively. 22,23,33 Structural differences between phyllosilicate specimens occur due to the different atomic substitutions in both T and Oc layers. 34 To maintain the charge balance of the structure, these atomic substitutions favor the formation of a cationic interlayer or even a hydroxide interlayer.…”

Section: Introductionmentioning

confidence: 99%

“…One of the challenges in using naturally occurring vdWs materials for 2D-based applications is the existence of impurities and defects in their crystal lattice. 2,20,22,27,29,[35][36][37] There can be point defects (e.g., vacancies, substitutional or interstitial impurities) or extended defects (e.g., grain boundaries, twin planes…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Phyllosilicates as earth-abundant layered materials for electronics and optoelectronics: Prospects and challenges in their ultrathin limit

Barcelos,

de Oliveira,

Schleder

et al. 2023

Journal of Applied Physics

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Phyllosilicate minerals are an emerging class of naturally occurring layered insulators with large bandgap energy that have gained attention from the scientific community. This class of lamellar materials has been recently explored at the ultrathin two-dimensional level due to their specific mechanical, electrical, magnetic, and optoelectronic properties, which are crucial for engineering novel devices (including heterostructures). Due to these properties, phyllosilicate minerals can be considered promising low-cost nanomaterials for future applications. In this Perspective article, we will present relevant features of these materials for their use in potential 2D-based electronic and optoelectronic applications, also discussing some of the major challenges in working with them.

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Section: A Mechanical Exfoliation and Van Der Waals Heterostructuresmentioning

confidence: 99%

Section: Electronic and Optoelectronic Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Phyllosilicates as earth-abundant layered materials for electronics and optoelectronics: Prospects and challenges in their ultrathin limit

Barcelos,

de Oliveira,

Schleder

et al. 2023

Journal of Applied Physics

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Probing Magnetic Ordering in Air Stable Iron‐Rich Van der Waals Minerals

Khan

Peil

Sharma

et al. 2023

Advanced Physics Research

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Magnetic monolayers show great promise for future applications in nanoelectronics, data storage, and sensing. The research in magnetic two‐dimensional (2D) materials focuses on synthetic iodides and tellurides, which suffer from a lack of ambient stability. So far, naturally occurring layered magnetic materials have been overlooked. These minerals offer a unique opportunity to explore complex air‐stable layered systems with high concentration of magnetic ions. Magnetic ordering in iron‐rich phyllosilicates is demonstrated, focusing on minnesotaite, annite, and biotite. These naturally occurring layered materials integrate local moment baring ions of iron via magnesium/aluminum substitution in their octahedral sites. Self‐inherent capping by silicate/aluminate tetrahedral groups enables air stability of ultra‐thin layers. Their structure and iron oxidation states are determined via Raman and X‐ray spectroscopies. Superconducting quantum interference device magnetometry measurements are performed to examine the magnetic ordering. Paramagnetic or superparamagnetic characteristics at room temperature are observed. Below 40 K ferrimagnetic or antiferromagnetic ordering occurs. In‐field magnetic force microscopy on exfoliated flakes confirms that the paramagnetic response at room temperature persists down to monolayers. Further, a correlation between the mixture of the oxidation states of iron and the critical ordering temperature is established, indicating a path to design materials with higher critical temperatures via oxidation state engineering.

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Review on infrared nanospectroscopy of natural 2D phyllosilicates

et al. 2023

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Phyllosilicates have emerged as a promising class of large bandgap lamellar insulators. Their applications have been explored from the fabrication of graphene-based devices to 2D heterostructures based on transition metal dichalcogenides with enhanced optical and polaritonics properties. In this review, we provide an overview of the use of infrared (IR) scattering-type scanning near-field optical microscopy (s-SNOM) for studying nano-optics and local chemistry of a variety of 2D natural phyllosilicates. Finally, we bring a brief update on applications that combine natural lamellar minerals into multifunctional nanophotonic devices driven by electrical control.

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Natural two-dimensional pyrophyllite: Nanoscale lubricant, electrical insulator and easily-machinable material

Cited by 3 publications

References 57 publications

Phyllosilicates as earth-abundant layered materials for electronics and optoelectronics: Prospects and challenges in their ultrathin limit

Phyllosilicates as earth-abundant layered materials for electronics and optoelectronics: Prospects and challenges in their ultrathin limit

Probing Magnetic Ordering in Air Stable Iron‐Rich Van der Waals Minerals

Review on infrared nanospectroscopy of natural 2D phyllosilicates

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