Provider: - Institution: - Data provided by Europeana Collections- Plaques originals de l'Àlbum de Montserrat editat per Hermenegildo Miralles el 1896 i de l'àlbum inèdit de l'exèrcit espanyol, així ...com de marcs, miralls i orles- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain ...Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Disorder among surface spins is a dominant factor in the magnetic response of magnetic nanoparticle systems. In this work, we examine time-dependent magnetization in high-quality, monodisperse hollow ...maghemite nanoparticles (NPs) with a 14.8 ± 0.5 nm outer diameter and enhanced surface-to-volume ratio. The nanoparticle ensemble exhibits spin-glass-like signatures in dc magnetic aging and memory protocols and ac magnetic susceptibility. The dynamics of the system slow near 50 K, and become frozen on experimental time scales below 20 K. Remanence curves indicate the development of magnetic irreversibility concurrent with the freezing of the spin dynamics. A strong exchange-bias effect and its training behavior point to highly frustrated surface spins that rearrange much more slowly than interior spins. Monte Carlo simulations of a hollow particle corroborate strongly disordered surface layers with complex energy landscapes that underlie both glass-like dynamics and magnetic irreversibility. Calculated hysteresis loops reveal that magnetic behavior is not identical at the inner and outer surfaces, with spins at the outer surface layer of the 15 nm hollow particles exhibiting a higher degree of frustration. Our combined experimental and simulated results shed light on the origin of spin-glass-like phenomena and the important role played by the surface spins in magnetic hollow nanostructures.
Ultrathin passive films effectively prevent the chemical attack of stainless steel grades in corrosive environments; their stability depends on the interplay between structure and chemistry of the ...constituents iron, chromium, and molybdenum (Fe-Cr-Mo). Carbon (C), and eventually boron (B), are also important constituents of steels, although in small quantities. In particular, nanoscale inhomogeneities along the surface can have an impact on material failure but are still poorly understood. Addressing a stainless-type glass-forming Fe 50 Cr 15 Mo 14 C 15 B 6 alloy and using a combination of complementary high-resolution analytical techniques, we relate near-atomistic insights into increasingly inhomogeneous nanostructures with time- and element-resolved dissolution behavior. The progressive elemental partitioning on the nanoscale determines the degree of passivation. A detrimental transition from Cr-controlled passivity to Mo-controlled breakdown is dissected atom by atom, demonstrating the importance of nanoscale knowledge for understanding corrosion.
Anti-Aging in Ultrastable Metallic Glasses Lüttich, Martin; Giordano, Valentina M; Le Floch, Sylvie ...
Physical review letters,
03/2018, Letnik:
120, Številka:
13
Journal Article, Publication
Recenzirano
Odprti dostop
As ultrastable metallic glasses (UMGs) are promising candidates to solve the stability issues of conventional metallic glasses, their study is of exceptional interest. By means of x-ray photon ...correlation spectroscopy, we have investigated the stability of UMGs at the atomic level. We find a clear signature of ultrastability at the atomic level that results in slower relaxation dynamics of UMGs with respect to conventional (rapidly quenched) metallic glasses, and in a peculiar acceleration of the dynamics by near T_{g} annealing. This surprising phenomenon, called here anti-aging, can be understood in the framework of the potential energy landscape. For all samples, the structural relaxation process can be described with a highly compressed shape of the density fluctuations, unaffected by thermal treatments and regardless of the ultrastability of the glass.
Provider: - Institution: - Data provided by Europeana Collections- Falques publicitàries. Carnestoltes a Discoteca Dallas.
Conjunt residencial S'Agaró.
Cristalleries Girona.
Farentino (carrer de la ...Creu).
Farentino (castellà).
Requeterebaixes de Fanals Bosch (av. Jaume I).
Hotel restaurant Nieves Mar.
Forn de pa El Fornet (c. Migdia).
Radiadors Antonio, radiadors metàl·lics per automòbils (c. Pedret).
Serralleria Pere Collell (Llagostera).
Transports Girona.
Mudances Girona.
Filatèlia i numismàtica Ordóñez.
Diputació de Girona.
Inter Clisset Carrier.
Llibreria i papereria Romaguera (L'Escala).
MRW missatgers.
Mobles Minipreu.
Tallers Ferrer (L'Escala).
Mama & Bebé (pça. Poeta Marquina).
Fotocopiadores de lloguer de Comercial Mulet (Barcelona).
Botiga el Cau del Llop (Salt).
Primer Saló del Col·leccionisme de Girona.
Reial Automòbil Club de Catalunya.
Urbanització Mas Vilà (Sant Antoni de Calonge).
Apartaments el Mirador (Begur) (min. 20).
Grup Costa Brava (Palamós).
Discoteca Galaxy (la Devesa).
Jovenalles (Salt).
Confeccions Ángeles (Salt).
Restaurant la Gran Muralla.
Teico (pça. Poeta Marquina).
Calçats Torres (Anglès).
Cafeteria restaurant Arosa (c. Barcelona).
Grup Costa Brava (Palamós).
Urbanització Mas Vilà (Sant Antoni de Calonge).
La Fundació Caixa de Pensions presenta Trios de Hayden, Mozart i Beethoven.
Slender You (Banyoles).
Suzuki Santana Samurai a Garatge Blanch (Fornells de la Selva).
Àngel Blach concessionari Opel (Fornells de la Selva).
Opel Cadet a Àngel Blach (Fornells de la Selva).
El Cau del llop (Salt).
Botiga Idoni (c. Santa Eugènia).
Camiones Itsa (en castellà).
Camions Itsa (en català).
Botiga Idoni 2.
Mosquitera Sumace SA (c. Santa Eugènia).
Compacte de finestra a Sumace SA.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Falques publicitàries.- Carnestoltes a Discoteca Dallas.
Conjunt residencial S'Agaró.
Cristalleries Girona.
Farentino (carrer de la ...Creu).
Farentino (castellà).
Requeterebaixes de Fanals Bosch (av. Jaume I).
Hotel restaurant Nieves Mar.
Forn de pa El Fornet (c. Migdia).
Radiadors Antonio, radiadors metàl·lics per automòbils (c. Pedret).
Serralleria Pere Collell (Llagostera).
Transports Girona.
Mudances Girona.
Filatèlia i numismàtica Ordóñez.
Diputació de Girona.
Inter Clisset Carrier.
Llibreria i papereria Romaguera (L'Escala).
MRW missatgers.
Mobles Minipreu.
Tallers Ferrer (L'Escala).
Mama & Bebé (pça. Poeta Marquina).
Fotocopiadores de lloguer de Comercial Mulet (Barcelona).
Botiga el Cau del Llop (Salt).
Primer Saló del Col·leccionisme de Girona.
Reial Automòbil Club de Catalunya.
Urbanització Mas Vilà (Sant Antoni de Calonge).
Apartaments el Mirador (Begur) (min. 20).
Grup Costa Brava (Palamós).
Discoteca Galaxy (la Devesa).
Jovenalles (Salt).
Confeccions Ángeles (Salt).
Restaurant la Gran Muralla.
Teico (pça. Poeta Marquina).
Calçats Torres (Anglès).
Cafeteria restaurant Arosa (c. Barcelona).
Grup Costa Brava (Palamós).
Urbanització Mas Vilà (Sant Antoni de Calonge).
La Fundació Caixa de Pensions presenta Trios de Hayden, Mozart i Beethoven.
Slender You (Banyoles).
Suzuki Santana Samurai a Garatge Blanch (Fornells de la Selva).
Àngel Blach concessionari Opel (Fornells de la Selva).
Opel Cadet a Àngel Blach (Fornells de la Selva).
El Cau del llop (Salt).
Botiga Idoni (c. Santa Eugènia).
Camiones Itsa (en castellà).
Camions Itsa (en català).
Botiga Idoni 2.
Mosquitera Sumace SA (c. Santa Eugènia).
Compacte de finestra a Sumace SA.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
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