Development of High Performance Piezoelectric AlScN for Microelectromechanical Systems: Towards a Ferroelectric Wurtzite Structure

Langue : anglais

Edité par Books On Demand Feb 2020, 2020

3750431426 / 9783750431423

Vendeur : BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AllemagneBuchWeltWeit Ludwig Meier e.K.

Vendeur avec une évaluation de 5 étoiles

Vendeur AbeBooks depuis 11 janvier 2012

Livre broché

Etat: Neuf

EUR 29,99

EUR 23,00 expédition 
Expédition depuis Allemagne vers Etats-Unis

Quantité disponible : 2 disponibles

Ajouter au panier
Retours gratuits sous 30 jours

A propos de cet article

This item is printed on demand - it takes 3-4 days longer - Neuware -The usage of piezoelectric and ferroelectric thin films is a promising approach to significantly increase the functionality of microelectromechanical systems (MEMS) as well as of microelectronics in general. Since the device performance thus becomes directly connected to the properties of the functional film, new as well as improved piezoelectric and ferroelectric materials can allow substantial technological innovation.This dissertation focused on enhancing the piezoelectric properties of AlN by forming solid solutions with ScN and includes the first experimental observation of ferroelectricity in AlScN, and thus the first discovery of ferroelectricity in a III-V semiconductor based material in general. Compared to AlN, piezoelectric coefficients that are up to 450% higher were realized in AlScN, with d33f reaching a maximum of 17.2 pm/V and e31f reaching 3.2 C/m . In this context, the identification and subsequent rectification of a major morphological instability in AlScN that becomes more pronounced with increasing Sc content was reported. Thus, films free of morphological inhomogeneities with close to ideal piezoelectric properties could be deposited up to 0.43% ScN. Control of the intrinsic film stress was demonstrated over a wide range from strongly tensile to strongly compressive for all the investigated Sc contents. The improved piezoelectric coefficients together with the possibility of stress control allowed the fabrication of suspended MEMS structures with electromechanical coupling coefficients improved by more than 320% relative to AlN. Ferroelectrictiy in AlScN was observed starting at ScN contents of 27%. Its emergence was connected to the same gradual evolution from the initial wurtzite structure to the layered hexagonal structure that also causes the enhanced piezoelectric coefficients while increasing the Sc content. Ferroelectric AlScN allowed the first experimental observation of the spontaneous polarization of the wurtzite structure and confirms that this polarization is more than one order of magnitude above most previous theoretical predictions.The large, tunable coercive fields and polarization constants together with the broad linear strain intervals, a paraelectric transition temperature above 600°C as well as the technological compatibility of the III-nitrides lead to a combination of exceptional properties that was previously inaccessible in ferroelectric thin films. 178 pp. Englisch.…

N° de réf. du vendeur 9783750431423

Titre
Development of High Performance Piezoelectric AlScN for Microelectromechanical Systems: Towards a Ferroelectric Wurtzite Structure
Auteur
Simon Fichtner
Éditeur
Books On Demand Feb 2020
Année de publication
2020
État de l'article
Neu
Jaquette
Jaquette
Reliure
Taschenbuch
Langue
anglais
ISBN à 10 chiffres
3750431426
ISBN à 13 chiffres
9783750431423
Poids de l'article
267 grammes
Dimensions
210x148x12 mm

BuchWeltWeit Ludwig Meier e.K.

Bergisch Gladbach, Allemagne

Vendeur avec une évaluation de 5 étoiles

Vendeur AbeBooks depuis 11 janvier 2012

Frais d'expédition de Allemagne vers Etats-Unis

Article5 à 15 jours ouvrés5 à 15 jours ouvrés
Premier articleEUR 23,00EUR 23,00
Les délais de livraison sont fixés par les vendeurs et varient en fonction du transporteur et du lieu. Les commandes transitant par les douanes peuvent être retardées et les acheteurs sont responsables de tous les droits ou frais associés. Les vendeurs peuvent vous contacter au sujet de frais supplémentaires afin de couvrir toute augmentation des coûts d'expédition de vos articles.

Modes de paiement

  • Visa
  • Mastercard
  • American Express
  • Carte Bleue
  • Apple Pay
  • Google Pay
  • Chèque
  • Paypal
  • Virement bancaire

Profil professionnel du vendeur

BuchWeltWeit Ludwig Meier e.K.

Allemagne