نتایج جستجو برای: surface magnetic properties

تعداد نتایج: 1712395  

بزرگمهر, محسن, حسین زاده, مجید, عسکری, مجید, قاسمی, علی,

NdFeB magnetic alloy is one of the hard magnets having the highest maximum energy in the world. The most popular methods of manufacturing magnetic alloys Nd2Fe14B are powder metallurgy and  rapid quenching techniques. In this research, the effect of  the hot press temperature on the magnetic properties of the  hard magnet Nd2Fe14B was studied. Structural studies were carried out ...

Journal: :international journal of environmental research 0
k. sandeep department of marine geology, mangalore university, mangalagangotri 574199, india, 2 present address: geological survey of india-training institute, bandlaguda, hyderabad 500068, india a.k. warrier department of marine geology, mangalore university, mangalagangotri 574199, india, present address: antarctic science division, national centre for antarctic & ocean research, headland sada, vasco-da-gama, goa 403 804, india b.g. harshavardhana department of marine geology, mangalore university, mangalagangotri 574199, india r. shankar department of marine geology, mangalore university, mangalagangotri 574199, india

iron oxide minerals in soils provide valuable insights into pedogenic processes. a wealth of such information has been obtained by rock magnetic investigations on temperate soils but similar studies on tropical soils are rare. here, we report rock magnetic data on pristine soil profiles and surficial soils from five catchments in the tropical southern india and throw light on the pedogenic proc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

a novel silver (ag) nanocomposite electrode was proposed that fabricated from metal nanostructures and ionic liquids. the combined application of unique properties of nanomaterials and ionic liquids in the design of this ag nanocomposite results in electrodes with interesting advantages compared to the conventional metal disk electrode. in the first part of this thesis, the elecrocatalytic eff...

2010
Feng Tian Dianping Tang

This study describes a new strategy toward the development of advanced immunosensors based on chemically functionalized magnetic-core/porous-shell CoFe2O4/Cu2O composite nanoparticles, and the preparation, characterization, and measurement of relevant properties of the immunosensor useful for the detection of hepatitis B surface antigen (HBsAg) in clinical immunoassay. The immunosensor based on...

Nanocrystalline strontium hexaferrite (SrFe12O19) powders have been successfully synthesized using the facile Co-precipitation method. The ferrite precursors were achieved from mixtures of strontium and ferric chloride in an aqueous medium without any surfactant and soft template. The as-received powders were calcined at 800 and 1000 ˚C for 2 hours in air. The final powders were characterized b...

2001
Weimin Lin Hitoshi Ohmori Nobuhide Itoh Jun Qian Masahiro Anzai

In recent years, the establishment of an ultimate machining method for realizing further ultra precision, ultra smoothness, and ultra micronization is becoming increasingly essential in the manufacture of various microdevices, which are functional structures. This need demand is particularly strong in the areas of object electronics, mechatronics, biology, and medicine. The accuracy sought rang...

Journal: Nanochemistry Research 2016

Analytical chemistry has experienced, as well as other areas of science, a big change due to the needs and opportunities provided by analytical nanoscience and nanotechnology. Now, nanotechnology is increasingly proving to be a powerful ally of analytical chemistry to achieve its objectives, and to simplify analytical processes. Moreover, the information needs arising from the growing nanotechn...

ژورنال: مواد پرانرژی 2013

Non-destructive testing methods are used to detecting defects in materials and evaluation of materials properties without causing changes to their usable properties. They are applied in industry to provide the assurance of high quality for semi-manufactured products, final products, devices and materials. Except of many civilian applications they are widely used in rocket and aviation industry ...

Journal: :journal of nanostructures 2015
z. haji jamali m. almasi kashi a. ramazani

nicu alloy nanowires arrays were embedded into the anodic aluminum oxide (aao) template by ac-pulse electrodeposition. different off-time were used in electrolyte with constant concentration of ni and cu and acidity of 3. the effect of deposition parameters on alloy contents was investigated by studying the microstructure and magnetic properties of as-deposited nicu alloy nanowires. atomic forc...

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