Dual field effects in electrolyte-gated spinel ferrite: electrostatic carrier doping and redox reactions

Ichimura, Takashi; Fujiwara, K.; Tanaka, Hidekazu

doi:10.1038/srep05818

Cited by 19 publications

(16 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After the successful demonstration of electric‐field‐induced superconductivity in SrTiO 3 by EDLTs, many researchers have applied EDLTs to strongly correlated electron systems and demonstrated electrical switching of the MIT by an external voltage in a broad range of materials, including transition‐metal oxides and transition‐metal dichalcogenides . In this section, in particular, we focus on the results of EDLTs based on vanadium dioxide, VO 2 , perovskite manganite, Pr 0.5 Sr 0.5 MnO 3 , and tantalum disulfide, 1T‐TaS 2 , as representative examples of gate‐induced MITs in correlated insulators .…”

Section: Electric‐field‐induced Phase Control By Electrolyte Gatingmentioning

confidence: 99%

Endeavor of Iontronics: From Fundamentals to Applications of Ion‐Controlled Electronics

et al. 2017

View full text Add to dashboard Cite

Iontronics is a newly emerging interdisciplinary concept which bridges electronics and ionics, covering electrochemistry, solid-state physics, electronic engineering, and biological sciences. The recent developments of electronic devices are highlighted, based on electric double layers formed at the interface between ionic conductors (but electronically insulators) and various electronic conductors including organics and inorganics (oxides, chalcogenide, and carbon-based materials). Particular attention is devoted to electric-double-layer transistors (EDLTs), which are producing a significant impact, particularly in electrical control of phase transitions, including superconductivity, which has been difficult or impossible in conventional all-solid-state electronic devices. Besides that, the current state of the art and the future challenges of iontronics are also reviewed for many applications, including flexible electronics, healthcare-related devices, and energy harvesting.

show abstract

Section: Electric‐field‐induced Phase Control By Electrolyte Gatingmentioning

confidence: 99%

Endeavor of Iontronics: From Fundamentals to Applications of Ion‐Controlled Electronics

et al. 2017

View full text Add to dashboard Cite

show abstract

“…These several applications are based on magnetic and electrical behavior of ferrites [1][2][3][4][5][6]. These properties depend on various factors like, ionic radii, nature of hybridization, presence of doped atom in host lattice apart from the particle size [7][8][9][10]. Thus, research is being carried out for doped ferrite systems in order to understand the altered behavior and to optimize them for different applications [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Solubility limit, magnetic interaction and conduction mechanism in rare earth doped spinel ferrite

Singh¹,

Kumar²,

Srivastava³

et al. 2016

Appl. Sci. Lett.

View full text Add to dashboard Cite

In present review we have focused various issues like solubility limit, magnetic interaction and conduction mechanism of rare earth doped ferrite. Cumulative effects of valence state, magnetic moments of rare earth ions, weakening/strengthening of exchange interaction and magnetic ordering in rare earth ion doped ferrite are responsible for magnetic behavior. It is proposed that characterization techniques based on synchrotron radiation like X-ray absorption spectroscopy and X-ray magnetic circular dichroism can open pathways to prove these assumptions.Keywords: Rare earth, ferrites, magnetic interaction, valence state 1.INTRODUCTIONSpinel ferrites are ferrimagnetic material which have numerous technological applications [1][2][3]. Moreover, nanoparticles of these ferrites are being utilized in high-density magnetic information storage, magnetic resonance imaging, drug delivery etc. [4][5][6]. These several applications are based on magnetic and electrical behavior of ferrites [1][2][3][4][5][6]. These properties depend on various factors like, ionic radii, nature of hybridization, presence of doped atom in host lattice apart from the particle size [7][8][9][10]. Thus, research is being carried out for doped ferrite systems in order to understand the altered behavior and to optimize them for different applications [11][12][13][14][15]. In recent years, rare earth (RE) doped ferrites become interesting due to their superiority for various applications over other doped ferrite systems [17][18][19][20][21][22]. These systems become radioactive and exhibit potentential for biomedical applications [19] along-with efficient tumor passive targeting [23]. Improved capability of dye removal [24], waste water treatment [25], degradation of organic pollutants through photocatalytic activity [26] are other important fields of utilization of these ferrites. These ferrites exhibit enhanced magneto optical kerr (MOKE) effect [20] and excellent microwave absorption properties [21,22]. Thus, these ferrites cover a wide range of applications chiefly based on their magnetic characteristics [17][18][19][20][21][22][23][24][25]. However, there is lack of understanding of magnetic interaction, conduction mechanism inside these ferrites [15,16]. Thus purpose of this review article is to discuss these issues and to give prospects for future research in this direction. SPINEL FERRITEThe general formula for spinel ferrite is MO:Fe2O3 where, M is a divalent transition metal ion. Spinel name is given due to resemblance of structure of these ferrites with mineral spinel MgO.Al2O3. In this structure, oxygen ions are packed quite close together in face centred cubic arrangement and metal ions occupy spaces between them (Fig. 1). These spaces are categorized as tetrahedral (A) and octahedral (B) sites when surrounded by four and six oxygen ions respectively (Fig. 1).In a unit cell of spinel ferrite, there exists 64 and 32 A and B-sites respectively. Only 1/8 th and 1/2 th of A and B-sites are occupied [27]. Metal ions are distributed among A a...

show abstract

“…A range of ionic species can be used to modify the properties of materials or design metastable phases. For example, the incorporation or removal of small ions such as hydrogen ion (H + ) [10,17,31], lithium ion (Li + ) [30,32,33], fluorine ion (F − ) [12], O vacancies [11,[34][35][36][37], and oxygen interstitials in hexagonal oxides [38] can be used to control a myriad of properties. Use of protons is particularly suited, and as a strong reducer can be used to realize powerful control over the valence states in materials.…”

Section: Ion Doping Methodsmentioning

confidence: 99%

“…As a result, large change in resistance or optical transmittance can take place in several materials. Up to now, ionic liquid gating experiments have been conducted for many systems including VO 2 [10,37], SmNiO 3 [17,43], (Fe, Zn) 3 O 4 [36,44], etc. (see more details in Section 3).…”

Section: Ion Doping Methodsmentioning

confidence: 99%

Beyond electrostatic modification: design and discovery of functional oxide phases via ionic-electronic doping

Zhang

Zhou

et al. 2018

Advances in Physics: X

Self Cite

View full text Add to dashboard Cite

A new research field of functional materials and device physics is rising that combines ionic transport with charge carrier modulation to realize emergent physical properties and discovery of metastable phases. The paradigm for enabling function extends far beyond carrier accumulation or depletion in band semiconductors or simply moving ions through an insulating electrolyte. Rather, by carefully selecting electronically or structurally fragile materials, one can collapse or open band gaps via extreme ionic dopant concentration, or reconfigure their entire crystal structure to create new phases. Electron-electron and electron-lattice interactions can be coupled or controlled independently in such systems via electric fields without thermal constraints by use of ionic dopants. The unifying theme across these studies is to introduce ions and electrons via electric fields through interfaces, with electrochemistry playing a dominant role. In this review, we briefly summarize this nascent field of iontronics and discuss principal results to date with examples from binary and complex oxides as well as selected 2D materials systems. We conclude the review by highlighting gaps in fundamental scientific understanding and prospects for the use of such novel devices in future electronic, photonic and energy technologies.

show abstract

Dual field effects in electrolyte-gated spinel ferrite: electrostatic carrier doping and redox reactions

Cited by 19 publications

References 34 publications

Endeavor of Iontronics: From Fundamentals to Applications of Ion‐Controlled Electronics

Endeavor of Iontronics: From Fundamentals to Applications of Ion‐Controlled Electronics

Solubility limit, magnetic interaction and conduction mechanism in rare earth doped spinel ferrite

Beyond electrostatic modification: design and discovery of functional oxide phases via ionic-electronic doping

Contact Info

Product

Resources

About