Electron-beam writing of ferroelectric domains in Bi4Ti3O12single crystals

Cummins, S. E.; Hill, B.

doi:10.1109/proc.1970.7817

Cited by 17 publications

(2 citation statements)

References 3 publications

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“…is coated with an approx. 20 nm thick amorphous magnetic layer (composed of FeGdCo, for example). The data are written by heating the layer briefly to a temperature close to or above the Curie point with the aid of a laser beam focused to approx.…”

Section: Erasable Optical Data Memories Using Polymer Substratesmentioning

confidence: 99%

“…18 -Reading and writing using a laser beam. 19 -Reading and writing using an electron beam 20 It is reasonable to expect that ferroelectric polymers will have a role .as information sto-/ ' ,... 21 Absorption experiments on amorphous polymers, such as suitable transparent polymers (e.g., PMMA) containing dyestuff molecules have revealed very inhomogenously broadened spectral lines. This broadening is caused by the energetic interaction of the dyestuff molecules with their highly diverse local environments in· the polymer matrix.…”

Section: B) Erasable Memories Based On Ferroelectric Polymersmentioning

confidence: 99%

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Special Polymers for Data Memories

Kaempf

1987

Polym J

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ABSTRACT:Microelectronics represent to a large extent the key industry in the 80' and 90's of this century. Progress in microelectronics, however, is directly related to progress in data storage technology. Up to now main data memories are exclusively based on silicon semiconductor devices, mass data memories -at least the most important ones-are magnetic data storage units. New on the market are non-erasable optical memories using polymers or polymer substrates (e.g., CO-ROM's). Under development are erasable optical and electrical polymer data memories: photo-.polymers, LC-side chain polymers, ferroelectric polymers, and such for holographic or photochemical hole burning data storage. The paper describes the current state of art and compares the various developments of special polymers in an attempt to forecast the possible significance of polymer memories with high data packing densities in relation to the established technologies.

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Section: Erasable Optical Data Memories Using Polymer Substratesmentioning

confidence: 99%

Section: B) Erasable Memories Based On Ferroelectric Polymersmentioning

confidence: 99%

Special Polymers for Data Memories

Kaempf

1987

Polym J

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Polymere als Träger und Speicher von Informationen

Kämpf

1985

Ber Bunsenges Phys Chem

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Die technologische Entwicklung in den 80er und 90er Jahren wird weltweit durch Fortschritte der Mikroelektronik, im besonderen der Informationsspeicherung und ‐verarbeitung, bestimmt sein. Fortschritte in der Informationsspeicherung sind direkt verknüpft mit der Technik, große Datenmengen auf kleinstem Raum irreversibel oder — vorzugsweise — reversibel zu speichern. Durch Bereitstellung und systembezogene Anpassung intelligenter spezieller Polymerwerkstoffe könnte die Entwicklung fortschrittlicher löschbarer Speicher hoher Speicherdichte initiiert werden. Die weltweit beobachtbaren Aktivitäten auf diesem interessanten Gebiet stehen noch am Anfang; sie lassen sich derzeit in folgende Entwicklungsrichtungen differenzieren: — Löschbare Speicher auf Basis von Photopolymeren, von kristallisierfähigen Polymeren, von ferroelektrischen Polymeren, von Polymeren mit flüssigkristallinen Seitenketten. — Nicht selektiv löschbare Speicher mit 2‐dimensionaler Speicherung über Ort und Frequenz durch „photochemisches Lochbrennen”︁, mit 3‐dimensionaler Speicherung über Volumen‐Hologramme. — Entwicklung molekular‐elektronischer Schalt‐ und Speicherelemente über den gezielten Einbau von Molekülgruppen mit bistabilen Zuständen sowie mit Donator‐ resp. Akzeptor‐Eigenschaften. Im Fortschrittsbericht wird über den derzeitigen Stand der Technik referiert und an Hand eines kritischen Vergleichs der verschiedenen Entwicklungsarbeiten versucht, die mögliche zukünftige Bedeutung polymerer Speicher höchster Datendichte in Konkurrenz zu den etablierten Technologien abzuschätzen.

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Polymers as substrates and media for data storage

Kaempf

Loewer²,

Witman³

1987

Polymer Engineering & Sci

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Technological developments in the 1990s will be determined by progress in the field of microelectronics, particularly with regard to information processing and data storage. Progress in information storage is directly related to the ability to store large amounts of data in the smallest possible space, preferably in erasable form. Polymers are used as components in the standard storage systems of today: as carrier films for magnetic tapes, as photoresists and electron beam resists, and as substrates for magnetic and optical discs used for music or video replication and data storage. Storage systems with higher packing densities such as magnetooptical and phase change systems or memories based on photopolymers or polymers with liquid crystalline side chains are currently under development. In these systems, polymers will be used both as components and as actual storage materials. The development and the availability of advanced erasable memories with high storage densities could be accelerated by the availability and the system‐related modification of “intelligent” polymer materials. Worldwide activities in this interesting field have barely progressed beyond the initial stages. This progress report describes the current state of the art and compares the various developments in an attempt to forecast the possible significance of polymer memories with high data packaging densities in relation to the established technologies.

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Electron-beam writing of ferroelectric domains in Bi₄Ti₃O₁₂single crystals

Cited by 17 publications

References 3 publications

Special Polymers for Data Memories

Special Polymers for Data Memories

Polymere als Träger und Speicher von Informationen

Polymers as substrates and media for data storage

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