NDLI: Control of Grain Shape and Size in FePt–TiO<sub>2</sub> Nanocomposite Thin Films via Artificial Nucleation Layers

Content Provider	IEEE Xplore Digital Library
Author	Tiejun Zhou Cher, K. Jing Feng Hu Zhimin Yuan
Copyright Year	1965
Abstract	We report a general approach to the control of grain shape and size in FePt-TiO₂ nanocomposite thin films with high anisotropy energy and (001) orientation. By introducing an artificial nucleation layer of different materials (crystalline or amorphous) with different surface free energies (surface effect) and different thicknesses (ultrathin of 0-1nm) and by separating the film growth process from the nucleation process, it is possible to have individual control over both the nucleation and growth processes. It is found that using crystalline materials of thickness 0-1nm, such as FePt, having surface free energy of about 2000-3000erg/cm², as the artificial nucleation layer, square-shape FePt grains were observed. The grain size decreases with the increase of sputter power for the artificial nucleation layer. Furthermore, the chemical ordering degree is improved using crystalline nucleation layer, through which more TiO² can be doped into FePt layer, resulting in even smaller grain size without deteriorating the magnetic properties. While, with amorphous materials of thickness 0-1nm, such as C, TiO₂, and others, having a much smaller surface free energy of 50-100erg/cm², as the artificial nucleation layer, smaller and circular-shape FePt grains were seen. When the thickness of artificial nucleation layer increases, a clear trend of grain size reduction and grain-shape evolution from square/rectangle shape to circular shape were observed. The mechanism for the grain-shape evolution and size control by using an artificial nucleation layer of different materials is discussed with regard to surface/interface effects. The findings offer a general way to the control of grain size and shape in nanostructured magnetic thin film for various applications.
Sponsorship	IEEE Magnetics Society
Starting Page	1
Ending Page	4
Page Count	4
File Size	1837864
File Format	PDF
ISSN	00189464
Volume Number	50
Issue Number	11
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Grain size Shape Carbon Process control Surface treatment X-ray scattering surface/interface free energy Artificial nucleation layer FePt grain shape and size preferred growth direction
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Control of the Microstructure of FePt-SiN$_{rm x}$ -C (001) Film by a Nucleation Layer Grown on TiN Intermediate Layer

Highly ordered fept 10 thin films with small grains on rual seed layers.

Grain Isolation Control of FePt Thin Film by Using Ag Nucleation Layer

Epitaxial Growth of L1 –FePt Granular Thin Films on TiC/RuAl Underlayers

Grain size control in FePt thin films by Ar-ion etched Pt seed layers

Current-Induced Fast-Ordering of L1$_{0}$-FePt Films With Small Grain Size

Grain isolation control of FePt thin film by using Ag nucleation layer

Effect of rual and tin underlayers on grain morphology, ordering, and magnetic properties of fept-sio thin films.

Reduction of grain size and ordering temperature in L1/sub 0/ FePt thin films

Control of Grain Shape and Size in FePt–TiO₂ Nanocomposite Thin Films via Artificial Nucleation Layers

Similar Documents

Control of the Microstructure of FePt-SiN$_{rm x}$ -C (001) Film by a Nucleation Layer Grown on TiN Intermediate Layer

Highly ordered fept 10 thin films with small grains on rual seed layers.

Grain Isolation Control of FePt Thin Film by Using Ag Nucleation Layer

Epitaxial Growth of L1 –FePt Granular Thin Films on TiC/RuAl Underlayers

Grain size control in FePt thin films by Ar-ion etched Pt seed layers

Current-Induced Fast-Ordering of L1$_{0}$-FePt Films With Small Grain Size

Grain isolation control of FePt thin film by using Ag nucleation layer

Effect of rual and tin underlayers on grain morphology, ordering, and magnetic properties of fept-sio thin films.

Reduction of grain size and ordering temperature in L1/sub 0/ FePt thin films

Control of Grain Shape and Size in FePt–TiO2 Nanocomposite Thin Films via Artificial Nucleation Layers

Control of Grain Shape and Size in FePt–TiO₂ Nanocomposite Thin Films via Artificial Nucleation Layers