Results 101 to 110 of about 21,197 (309)

Ferromagnetism Study of Co0.2MgxZn0.8−xO Films Prepared by the Sol–Gel Method

open access: yes, 2013
[[abstract]]Co 0.2Mg x Zn 0.8-x O films prepared with different molar ratio of magnesium acetate to zinc acetate were deposited on substrates by the sol-gel technique. X-ray diffraction, photoluminescence (PL) and ferromagnetism measurements were used to
Lin, Yow-Jon; Tsai, Chia-Lung; Liu, Chia-Jyi; Horng, Lance; Shih, Yu-Tai; Wang, Mu-Shan; Jhang, Chuan-Sheng; Huang, Chao-Shien
core  

Ferromagnetism in a hard-core boson model

open access: yes, 2005
The problem of ferromagnetism – associated with a ground state with maximal total spin – is discussed in the framework of a hard-core model, which forbids the occupancy at each site with more than one particle.
A. Fledderjohann   +5 more
core   +1 more source

Microscale Patterning of Ultrahigh‐Viscosity Metallic‐Polymer Composites via Embedded Droplet Writing

open access: yesAdvanced Functional Materials, EarlyView.
A hybrid additive manufacturing platform integrates direct droplet writing of metallic composite with VAT photopolymerization to fabricate architected soft magnetic composites. This approach enables microscale patterning of high‐viscosity materials for programmable actuators, adaptive fluidic devices, and switchable adhesives, offering tunable ...
Yeowon Yoon   +4 more
wiley   +1 more source

Self-Organization of Template-Replicating Polymers and the Spontaneous Rise of Genetic Information

open access: yesEntropy, 2001
: Living systems imply self-reproducing constructs capable of Darwinian evolution. How such dynamics can arise from undirected interactions between simple monomeric objects remains an open question.
Jarle Breivik
doaj   +1 more source

Origin and Enhancement of Hole-Induced Ferromagnetism in First-Row d(0) Semiconductors

open access: yes, 2009
The origin of ferromagnetism in d(0) semiconductors is studied using first-principles methods with ZnO as a prototype material. We show that the presence of spontaneous magnetization in nitrides and oxides with sufficient holes is an intrinsic property ...
Xiang HJ   +7 more
core  

d0 ferromagnetism in undoped sphalerite ZnS nanoparticles

open access: yes, 2011
We report the sulfur vacancies-related d ferromagnetism in undoped sphalerite ZnS nanoparticles. Systematically tune of sulfur deficiency in ZnS nanoparticles was done by selecting different synthesized temperatures and varying the ratio of hydrogen and ...
Zhang, Jing   +11 more
core   +1 more source

Architecture‐Driven Functional Coupling in Vertically Aligned Nanocomposites

open access: yesAdvanced Functional Materials, EarlyView.
Vertically aligned nanocomposites define a growth‐engineered architecture in which vertical interfaces, strain fields, defect pathways, and phase connectivity are created simultaneously. This review shows how these architectural features couple ferroic, optical, ionic, electrochemical, and device responses, establishing design rules and open challenges
Md Shatil Islam‐Shanto   +4 more
wiley   +1 more source

Magnetic Shape Memory Microactuators

open access: yesMicromachines, 2014
By introducing smart materials in micro systems technologies, novel smart microactuators and sensors are currently being developed, e.g., for mobile, wearable, and implantable MEMS (Micro-electro-mechanical-system) devices.
Manfred Kohl   +5 more
doaj   +1 more source

Room-temperature ferromagnetism in cerium dioxide powders

open access: yes, 2020
© 2015, Pleiades Publishing, Inc. Room-temperature ferromagnetism is detected in a CeO2 powder with a grain size of about 35 nm and a low (2 sample with a submicron crystallite size and the same manganese and iron impurity content is lower than in the ...
Rakhmatullin R.   +3 more
core  

Magnetically Driven Biofabrication for Tissue Engineering: From Nanoparticle Design to Mag‐ATMP Translation

open access: yesAdvanced Healthcare Materials, EarlyView.
Magnetically responsive nanoparticles enable remote control over biomaterials, cells, and engineered tissues. This review summarizes material design, biological safety, fabrication and actuation strategies, computational validation, and translational pathways that support the development of magnetic tissue‐engineering platforms and future magnetically ...
Konstantinos Ioannidis   +8 more
wiley   +1 more source

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