EPR of Er3+, Nd3+, and Ce3+ ions in YAlO3 single crystals

Asatryan, Georgi; Rosa, J.

doi:10.1134/1.1477485

Cited by 13 publications

(13 citation statements)

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“…In particular, the features at 1550 and 1400 cm -1 (COOantisymmetric and symmetric stretch, respectively) arise from acetate groups. The sharp peak at 1385 cm -1 is due to surfaceadsorbed NO 3 -, and has previously been observed in samples of urban particulate matter and hydroxylated Al 2 O 3 exposed to NO 2 [30]. The 130 °C spectra of materials prepared using the different-size xAl 2 O 3 precursors are similar.…”

Section: Ftir Spectrasupporting

confidence: 63%

“…Y(NO 3 ) 3 and Er(NO 3 ) 3 solutions were mixed in a beaker, then the appropriate amount of solid Al(NO 3 ) 3 ⋅ 9H 2 O was added with stirring. Solid citric acid was then mixed, so that the mol ratio citric acid: total metal ions was 3:1.…”

Section: Nitrate-citric Acid Methodsmentioning

confidence: 99%

“…The conventional preparations involve the high-temperature (ca. 2000 °C) Czochralski growth in an inert atmosphere [2,3]. When doped with lanthanide ions, these refractory materials find applications as phosphors, scintillators and solid-state laser crystals.…”

Section: Introductionmentioning

confidence: 99%

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Preformed sol-gel synthesis and characterization of lanthanide ion-doped yttria-alumina materials

Tanner

Law

2003

phys. stat. sol. (a)

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PACS 78.55.Hx, 81.05.Je, 81.20.Fw Powders of yttria-alumina materials YAlO 3 (YAP) and Y 3 Al 5 O 12 (YAG) have been prepared from commercially-available preformed sols, and the products were compared with those from preformed solnitrate, nitrate-citric acid and alkoxide methods. The preformed sol route offers an alternative cheap and rapid method, and different sizes of the nanometre-scale precursors are available. Characterization was carried out by SEM, XRD, TG-DTG-DTA and FTIR-DRIFTS. On doping with Er 3+ , the maximum intensity of green emission was found for a dopant ion concentration of 1.0-1.2 mol%, with cross-relaxation to depopulate 2 H 11/2 / 4 S 3/2 becoming more important at higher dopant ion concentrations. A memory effect of the precursor sol upon the luminescence intensity of the product was able to distinguish precursors from two different suppliers. Demonstrations are given of the use of site-selective luminescence spectra in monitoring the purity of the yttria-alumina products. catalytic applications [22], partly because they are widely available and much cheaper than alkoxides. Preformed sols are stable mixtures of dispersed particles within a given size range, which by contrast to the conventional hydrolysis-polymerization sol-gel reactions of alkoxides, enable the sol and gel processes to be isolated and performed in two steps. This is attractive because it offers potential control over the particle size, crystallinity and microstructure of the product. The preformed sol route has other advantages that different-size precursors are readily available in aqueous solutions, employed herein, or as dispersed powders. The alumina sols consist of porous aggregates of rod-or platelet-boehmite (γ-AlO.OH.nH 2 O) crystallites [22]. It has been envisaged [22] that nanometer-scale mixing of preformed sols of widely-different sizes, such as large alumina and small silica particles, results in isolated large particles dispersed in a sea of smaller particles.The goal of the present study was to utilize preformed sols in the preparation of YAP and YAG. These materials were doped with the lanthanide ion Er 3+ , which has intense, well-characterized emission properties. In addition, several areas were investigated concerning the resulting luminescence properties of the doped YAP and YAG materials: the concentration-intensity dependence of the luminescence, the possible occurrence of precursor memory effects, and the site-selective resolution of product materials. A preliminary report of some areas of the present study was made at the IUPAC International Congress on Analytical Sciences [23].

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Section: Ftir Spectrasupporting

confidence: 63%

Section: Nitrate-citric Acid Methodsmentioning

confidence: 99%

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Preformed sol-gel synthesis and characterization of lanthanide ion-doped yttria-alumina materials

Tanner

Law

2003

phys. stat. sol. (a)

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“…We refer that to the uncertainties in the determination of the hyperfine tensor A, which was also measured at the same level of accuracy at 12 Kelvin, see Refs. [39,45].…”

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confidence: 99%

Strong coupling of anEr3+-dopedYAlO3crystal to a superconducting resonator

et al. 2014

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Quantum memories are integral parts of both quantum computers and quantum communication networks. Naturally, such a memory is embedded into a hybrid quantum architecture, which has to meet the requirements of fast gates, long coherence times and long distance communication. Erbium doped crystals are well suited as a microwave quantum memory for superconducting circuits with additional access to the optical telecom C-band around 1.55 µm. Here, we report on circuit QED experiments with an Er 3+ :YAlO3 crystal and demonstrate strong coupling to a superconducting lumped element resonator. The low magnetic anisotropy of the host crystal allows for attaining the strong coupling regime at relatively low magnetic fields, which are compatible with superconducting circuits. In addition, Ce 3+ impurities were detected in the crystal, which showed strong coupling as well.PACS numbers: 42.50. Fx, 76.30.Kg, 03.67.Hk, 03.67.Lx, Reliable operation of quantum information and communication protocols requires a quantum memory (QM), i.e. a system, which allows for storage and on-demand retrieval of a quantum bit [1,2]. This can be realized by a great variety of physical systems such as single trapped ions [3], atoms [4], single spins [5], two-level defects [6] and spin-ensembles [7], which differ by their frequency band, coherence time and operating conditions. Rare-earth (RE) ions doped into a solid represent one of most promising systems suitable for quantum memories, because their inner shell 4f optical electronic transitions possess very long coherence times [8]. The excellent optical properties of RE doped crystals are confirmed and harvested by the world wide research in quantum optics. This includes a light-matter interface at the single photon level [9], an efficient and broadband quantum memory for light [10,11], a quantum memory at the telecom Cband [12], an atomic frequency comb memory [13], storage of entanglement in a RE doped crystal [14] and generation of entanglement between two crystals [15]. Yet, in contrast to the single atom approach, a quantum memory based on RE doped solids allows for the implementation of multimode storage protocols [16,17].There are seven RE's ions (Ce 3+ , Nd 3+ , Sm 3+ , Gd 3+ , Dy 3+ , Er 3+ , Yb 3+ ), which are suited for a microwave quantum memory due to the presence of a large electronic spin associated with an unquenched orbital moment [18]. Most of them have access to the nuclear spin degrees of freedom, which allow for long term storage [19]. These RE ions can be doped into a variety of host crystals, and therefore, can potentially be integrated with superconducting (SC) quantum circuits [20]. The resulting hybrid quantum system can consist of a SC qubit, a transmission line or a resonator magnetically coupled to the spin ensemble [21]. The exclusive feature of some RE ions (Nd 3+ , Er 3+ , Yb 3+ ) is the presence of optical transitions inside standard telecommunication bands. A quantum memory based on these RE elements can be very attractive for quantum communication between qubits...

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“…It is well known that the ESR of Nd 3+ in BaTiO 3 crystals can be observed only in the rhombohedral phase of BaTiO 3 at low temperatures (e.g., T = 7 K) [16] and in other host crystals can also be detected at low temperatures (e.g., T ≤ 20 K) using the X-band frequency [25,26,27,28,29]. Neodymium has six stable isotopes; two of them, 145 Nd 3+ and 143 Nd 3+ (8.3 and 12.17% of nature abundance, I = 7/2), are odd isotopes with a non-zero magnetic moment.…”

Section: Discussionmentioning

confidence: 99%

Aging-Resistant Behavior and Room Temperature Electron Spin Resonance of Nd3+ in Singly and Doubly Doped BaTiO3 Ceramics Associated with Preservation History

Liu

2019

Materials

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The (Ba0.96Nd0.04)Ti0.99O3 (BN4T) and (Ba0.96Nd0.04)(Ti0.94Ce0.05)O3 (BN4TC5) ceramics were prepared via the mixed oxide route exhibited tetragonal and pseudo-cubic structures, respectively. After they were preserved over a long period of time, a broader electron spin resonance (ESR) signal at g = 2.338 and a narrow ESR signal at g = 2.151 were detected at room temperature (RT) for BN4T and BN4TC5, respectively. They most likely originated from the Nd3+ Kramers ions in BN4T and Nd3+-Ce4+ defect complexes in BN4TC5 ceramics, respectively. The origins of these two ESR signals and the aging-resistant dielectric behavior are further discussed.

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EPR of Er3+, Nd3+, and Ce3+ ions in YAlO3 single crystals

Cited by 13 publications

References 13 publications

Preformed sol-gel synthesis and characterization of lanthanide ion-doped yttria-alumina materials

Preformed sol-gel synthesis and characterization of lanthanide ion-doped yttria-alumina materials

Strong coupling of anEr3+-dopedYAlO3crystal to a superconducting resonator

Aging-Resistant Behavior and Room Temperature Electron Spin Resonance of Nd3+ in Singly and Doubly Doped BaTiO3 Ceramics Associated with Preservation History

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