Solve : A giant leap for IBM Research. Untold story?

1.	Solve : A giant leap for IBM Research. Untold story?
Answer» This is news because it is not news. This is about hard DRIVE technology. For a number of years IBM has being doing work on a GMR. But lately something has happened. There should have been, there was, a story about this in March. Now you can not find it. Hard to make a story out of something big that just disappears. Does anybody here know what happened? First, a short summary. The IBM GMR refers to a hard drive head that can read a lot more data on one pass. Think about it. Current technology requires the head to step over and start a new read to get more data. If they get it to work, the hard disk industry will have a longer future. More data faster than ever before. The work goes back to about 2001. and that information is still out there. Here is what I see in the Google cache... Quote GMR A Giant Leap IBM Research - Best Computer Desk www.computerdesk.tk/GMR-A-Giant-Leap-IBM-Research Mar 6, 2015 - GMR A Giant Leap IBM Research. The Giant Magnetoresistive Head A giant leap for IBM Research To some people years a decade To IBM ... Was this story redacted? It should have been published in March. Earlier your can read this: http://budker.berkeley.edu/Physics141_2013/GMR_Matthew_Melissa.pdf It is a serious PDF with the title: Giant Magnetoresistance Matthew Melissa – Physics 141A – Spring 2013 A Noble prize was given in 2007. See above E document. Here is a story that also is now very old. This gives you the idea that by now there should have been a big breakthrough. http://www.research.ibm.com/research/gmr.html Quote Searching for a useful disk-drive sensor design that would operate at low magnetic fields, Bruce Gurney and colleagues began focusing on the simplest possible arrangement: two magnetic layers separated by a spacer layer CHOSEN to ensure that the coupling between magnetic layers was weak, unlike previously made structures. They also "pinned" in one direction the magnetic orientation of one layer by adding a fourth layer: a strong antiferromagnet. When a weak magnetic field, such as that from a bit on a hard disk, passes beneath such a structure, the magnetic orientation of the unpinned magnetic layer rotates relative to that of the pinned layer, generating a significant change in electrical resistance due to the GMR effect. This structure was named the spin valve. To see an animation of how MR and GMR recording heads work, click here. Gurney and colleagues worked for several years to perfect the sensor design that is used in the new disk drives. The materials and their tiny dimensions had to be fine-tuned so they 1) could be manufactured reliably and economically, 2) YIELDED the uniform resistance changes required to detect bits on a disk accurately, and 3) were stable -- neither corroding nor degrading -- for the lifetime of the drive. "That's why it's so important to understand the science," Parkin says. "IBM's intensive studies of GMR enabled us to enhance considerably the performance of some low-field sensors." So, either the whole idea tanked... OR ... Is IBM is keeping a big secret? EDIT: For more, search on Gmr A Giant Leap For IBM ResearchDon't know where you got that weird link, but I do know that GMR became the dominant hard-drive-head technology round about the end of 1999, so maybe you missed the revolution? Later technologies such as TMR and PMR have come along since then. Thanks for the input The dead link was in a Google search. Yes. earlier IBM did so work or heads that became standard. But in 2007 there was a big deal about a patent for something that went beyond that technology. In 2014 a low-key video was released about an IBM fellow that was doing some really impressive stuff in the MR research. The IBM GMR means Giant magnetoresistance http://en.wikipedia.org/wiki/Giant_magnetoresistance Quote Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in thin-film structures composed of alternating ferromagnetic and non-magnetic conductive layers. The 2007 Nobel Prize in Physics was awarded to Albert Fert and Peter Grünberg for the discovery of GMR. It would appear the IBM is going to take this in a direction that we do not expect. At first it was hailed as a breakthrough in Hard Drive performance. If and when they make a new announcement, it will be a big thing for the whole industry. I was hoping somebody would give e a clue about what IBM has been doing. To see the video, search on: IBM wants to destroy the hard drive. This is the video given: http://on.aol.com/video/ibm-wants-to-kill-your-hard-drive-518389620 Listen and you hear him say that it goes way past hard drives. It will kill the hard drive forever. No, he does not use that word, but listen carefully. He talks about the potential like nothing else. I am sure I hear him say "...a million times faster than flash." That was six months ago. Time for an update. So, no news from IBM is strange. It looks like maybe it's the "Racetrack Memory" project, which is still just a gleam in the eyes of researchers. There are always such projects. Not all lead to industry-changing technology.

Answer»

This is news because it is not news.
This is about hard DRIVE technology.
For a number of years IBM has being doing work on a GMR.
But lately something has happened. There should have been, there was, a story about this in March. Now you can not find it. Hard to make a story out of something big that just disappears.

Does anybody here know what happened?

First, a short summary. The IBM GMR refers to a hard drive head that can read a lot more data on one pass. Think about it. Current technology requires the head to step over and start a new read to get more data. If they get it to work, the hard disk industry will have a longer future. More data faster than ever before.

The work goes back to about 2001. and that information is still out there.

Here is what I see in the Google cache...
Quote

GMR A Giant Leap IBM Research - Best Computer Desk
www.computerdesk.tk/GMR-A-Giant-Leap-IBM-Research
Mar 6, 2015 - GMR A Giant Leap IBM Research. The Giant Magnetoresistive Head A giant leap for IBM Research To some people years a decade To IBM ...

Was this story redacted? It should have been published in March.

Earlier your can read this:
http://budker.berkeley.edu/Physics141_2013/GMR_Matthew_Melissa.pdf
It is a serious PDF with the title:
Giant Magnetoresistance
Matthew Melissa – Physics 141A – Spring 2013

A Noble prize was given in 2007. See above E document.

Here is a story that also is now very old. This gives you the idea that by now there should have been a big breakthrough.
http://www.research.ibm.com/research/gmr.html
Quote

Searching for a useful disk-drive sensor design that would operate at low magnetic fields, Bruce Gurney and colleagues began focusing on the simplest possible arrangement: two magnetic layers separated by a spacer layer CHOSEN to ensure that the coupling between magnetic layers was weak, unlike previously made structures. They also "pinned" in one direction the magnetic orientation of one layer by adding a fourth layer: a strong antiferromagnet. When a weak magnetic field, such as that from a bit on a hard disk, passes beneath such a structure, the magnetic orientation of the unpinned magnetic layer rotates relative to that of the pinned layer, generating a significant change in electrical resistance due to the GMR effect. This structure was named the spin valve.
To see an animation of how MR and GMR recording heads work, click here. Gurney and colleagues worked for several years to perfect the sensor design that is used in the new disk drives. The materials and their tiny dimensions had to be fine-tuned so they 1) could be manufactured reliably and economically, 2) YIELDED the uniform resistance changes required to detect bits on a disk accurately, and 3) were stable -- neither corroding nor degrading -- for the lifetime of the drive. "That's why it's so important to understand the science," Parkin says. "IBM's intensive studies of GMR enabled us to enhance considerably the performance of some low-field sensors."

So, either the whole idea tanked... OR ...
Is IBM is keeping a big secret?

EDIT: For more, search on Gmr A Giant Leap For IBM ResearchDon't know where you got that weird link, but I do know that GMR became the dominant hard-drive-head technology round about the end of 1999, so maybe you missed the revolution? Later technologies such as TMR and PMR have come along since then.

Thanks for the input
The dead link was in a Google search.
Yes. earlier IBM did so work or heads that became standard. But in 2007 there was a big deal about a patent for something that went beyond that technology. In 2014 a low-key video was released about an IBM fellow that was doing some really impressive stuff in the MR research.
The IBM GMR means Giant magnetoresistance
http://en.wikipedia.org/wiki/Giant_magnetoresistance
Quote

Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in thin-film structures composed of alternating ferromagnetic and non-magnetic conductive layers. The 2007 Nobel Prize in Physics was awarded to Albert Fert and Peter Grünberg for the discovery of GMR.

It would appear the IBM is going to take this in a direction that we do not expect. At first it was hailed as a breakthrough in Hard Drive performance. If and when they make a new announcement, it will be a big thing for the whole industry.
I was hoping somebody would give e a clue about what IBM has been doing.
To see the video, search on:
IBM wants to destroy the hard drive.
This is the video given:
http://on.aol.com/video/ibm-wants-to-kill-your-hard-drive-518389620
Listen and you hear him say that it goes way past hard drives. It will kill the hard drive forever. No, he does not use that word, but listen carefully. He talks about the potential like nothing else.
I am sure I hear him say "...a million times faster than flash."
That was six months ago. Time for an update.
So, no news from IBM is strange. It looks like maybe it's the "Racetrack Memory" project, which is still just a gleam in the eyes of researchers. There are always such projects. Not all lead to industry-changing technology.

Solve : A giant leap for IBM Research. Untold story?

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